Re-implement AstroCalc/Almanac/Specific Time toolastrocalc/almanac

11 files changed, 1649 insertions, 26 deletions

diff --git a/data/gui/normalStyle.css b/data/gui/normalStyle.css
index 4aca1d5e7c..ba5b1a27d5 100644
--- a/data/gui/normalStyle.css
+++ b/data/gui/normalStyle.css
@@ -1181,3 +1181,12 @@ QMessageBox {
 QColorDialog {
         background-color: rgb(143, 143, 143);
 }
+
+/*************************************************************************
+ * AstroCalcAlmanacWidget
+ *************************************************************************/
+
+AstroCalcAlmanacWidget QFrame[frameShape="4"],   /* QFrame::HLine == 0x0004 */
+AstroCalcAlmanacWidget QFrame[frameShape="5"] {  /* QFrame::VLine == 0x0005 */
+	border: 1px solid rgb(238, 238, 238);
+}
diff --git a/po/stellarium/POTFILES.in b/po/stellarium/POTFILES.in
index bce6e937a6..2d80f1487e 100644
--- a/po/stellarium/POTFILES.in
+++ b/po/stellarium/POTFILES.in
@@ -57,6 +57,7 @@ src/gui/AstroCalcDialog.cpp
 src/gui/AstroCalcChart.cpp
 src/gui/AstroCalcExtraEphemerisDialog.cpp
 src/gui/AstroCalcCustomStepsDialog.cpp
+src/gui/AstroCalcAlmanacWidget.cpp
 src/gui/ObsListDialog.cpp
 src/gui/ConfigureDSOColorsDialog.cpp
 src/gui/ConfigureOrbitColorsDialog.cpp
@@ -86,6 +87,7 @@ src/ui_scriptConsole.h
 src/ui_astroCalcDialog.h
 src/ui_astroCalcExtraEphemerisDialog.h
 src/ui_astroCalcCustomStepsDialog.h
+src/ui_astroCalcAlmanacWidget.h
 src/ui_obsListDialog.h
 src/ui_dsoColorsDialog.h
 src/ui_orbitColorsDialog.h
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c86b71c3c6..6db2047a73 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -350,12 +350,14 @@ IF(STELLARIUM_GUI_MODE STREQUAL "Standard")
           gui/ConfigureScreenshotsDialog.cpp
           gui/AstroCalcDialog.hpp
           gui/AstroCalcDialog.cpp
+          gui/AstroCalcChart.hpp
+          gui/AstroCalcChart.cpp
           gui/AstroCalcExtraEphemerisDialog.hpp
           gui/AstroCalcExtraEphemerisDialog.cpp
           gui/AstroCalcCustomStepsDialog.hpp
           gui/AstroCalcCustomStepsDialog.cpp
-          gui/AstroCalcChart.hpp
-          gui/AstroCalcChart.cpp
+          gui/AstroCalcAlmanacWidget.hpp
+          gui/AstroCalcAlmanacWidget.cpp
           gui/ObsListDialog.hpp
           gui/ObsListDialog.cpp
           gui/StelDialog.hpp
@@ -392,6 +394,7 @@ IF(STELLARIUM_GUI_MODE STREQUAL "Standard")
           gui/astroCalcDialog.ui
           gui/astroCalcExtraEphemerisDialog.ui
           gui/astroCalcCustomStepsDialog.ui
+          gui/astroCalcAlmanacWidget.ui
           gui/obsListDialog.ui
           gui/addRemoveLandscapesDialog.ui
           gui/dsoColorsDialog.ui
diff --git a/src/core/modules/SpecificTimeMgr.cpp b/src/core/modules/SpecificTimeMgr.cpp
index f597bb5378..1a9300e19a 100644
--- a/src/core/modules/SpecificTimeMgr.cpp
+++ b/src/core/modules/SpecificTimeMgr.cpp
@@ -518,120 +518,136 @@ double SpecificTimeMgr::getSolstice(int year, SpecificTimeMgr::Solstice solstice
 
 void SpecificTimeMgr::currentMarchEquinox()
 {
-	double JD = core->getJDE();
+	double JD = core->getJD();
 	int year, month, day;
 	StelUtils::getDateFromJulianDay(JD, &year, &month, &day);
 	double estime = getEquinox(year, Equinox::March);
 	if (estime>0.)
-		core->setJDE(estime);
+		core->setJD(estime);
 }
 
 void SpecificTimeMgr::nextMarchEquinox()
 {
-	double JD = core->getJDE();
+	double JD = core->getJD();
 	int year, month, day;
 	StelUtils::getDateFromJulianDay(JD, &year, &month, &day);
 	double estime = getEquinox(year + 1, Equinox::March);
 	if (estime>0.)
-		core->setJDE(estime);
+		core->setJD(estime);
+
+	emit eventYearChanged();
 }
 
 void SpecificTimeMgr::previousMarchEquinox()
 {
-	double JD = core->getJDE();
+	double JD = core->getJD();
 	int year, month, day;
 	StelUtils::getDateFromJulianDay(JD, &year, &month, &day);
 	double estime = getEquinox(year - 1, Equinox::March);
 	if (estime>0.)
-		core->setJDE(estime);
+		core->setJD(estime);
+
+	emit eventYearChanged();
 }
 
 void SpecificTimeMgr::currentSeptemberEquinox()
 {
-	double JD = core->getJDE();
+	double JD = core->getJD();
 	int year, month, day;
 	StelUtils::getDateFromJulianDay(JD, &year, &month, &day);
 	double estime = getEquinox(year, Equinox::September);
 	if (estime>0.)
-		core->setJDE(estime);
+		core->setJD(estime);
 }
 
 void SpecificTimeMgr::nextSeptemberEquinox()
 {
-	double JD = core->getJDE();
+	double JD = core->getJD();
 	int year, month, day;
 	StelUtils::getDateFromJulianDay(JD, &year, &month, &day);
 	double estime = getEquinox(year + 1, Equinox::September);
 	if (estime>0.)
-		core->setJDE(estime);
+		core->setJD(estime);
+
+	emit eventYearChanged();
 }
 
 void SpecificTimeMgr::previousSeptemberEquinox()
 {
-	double JD = core->getJDE();
+	double JD = core->getJD();
 	int year, month, day;
 	StelUtils::getDateFromJulianDay(JD, &year, &month, &day);
 	double estime = getEquinox(year - 1, Equinox::September);
 	if (estime>0.)
-		core->setJDE(estime);
+		core->setJD(estime);
+
+	emit eventYearChanged();
 }
 
 void SpecificTimeMgr::currentJuneSolstice()
 {
-	double JD = core->getJDE();
+	double JD = core->getJD();
 	int year, month, day;
 	StelUtils::getDateFromJulianDay(JD, &year, &month, &day);
 	double estime = getSolstice(year, Solstice::June);
 	if (estime>0.)
-		core->setJDE(estime);
+		core->setJD(estime);
 }
 
 void SpecificTimeMgr::nextJuneSolstice()
 {
-	double JD = core->getJDE();
+	double JD = core->getJD();
 	int year, month, day;
 	StelUtils::getDateFromJulianDay(JD, &year, &month, &day);
 	double estime = getSolstice(year + 1, Solstice::June);
 	if (estime>0.)
-		core->setJDE(estime);
+		core->setJD(estime);
+
+	emit eventYearChanged();
 }
 
 void SpecificTimeMgr::previousJuneSolstice()
 {
-	double JD = core->getJDE();
+	double JD = core->getJD();
 	int year, month, day;
 	StelUtils::getDateFromJulianDay(JD, &year, &month, &day);
 	double estime = getSolstice(year - 1, Solstice::June);
 	if (estime>0.)
-		core->setJDE(estime);
+		core->setJD(estime);
+
+	emit eventYearChanged();
 }
 
 void SpecificTimeMgr::currentDecemberSolstice()
 {
-	double JD = core->getJDE();
+	double JD = core->getJD();
 	int year, month, day;
 	StelUtils::getDateFromJulianDay(JD, &year, &month, &day);
 	double estime = getSolstice(year, Solstice::December);
 	if (estime>0.)
-		core->setJDE(estime);
+		core->setJD(estime);
 }
 
 void SpecificTimeMgr::nextDecemberSolstice()
 {
-	double JD = core->getJDE();
+	double JD = core->getJD();
 	int year, month, day;
 	StelUtils::getDateFromJulianDay(JD, &year, &month, &day);
 	double estime = getSolstice(year + 1, Solstice::December);
 	if (estime>0.)
-		core->setJDE(estime);
+		core->setJD(estime);
+
+	emit eventYearChanged();
 }
 
 void SpecificTimeMgr::previousDecemberSolstice()
 {
-	double JD = core->getJDE();
+	double JD = core->getJD();
 	int year, month, day;
 	StelUtils::getDateFromJulianDay(JD, &year, &month, &day);
 	double estime = getSolstice(year - 1, Solstice::December);
 	if (estime>0.)
-		core->setJDE(estime);
+		core->setJD(estime);
+
+	emit eventYearChanged();
 }
diff --git a/src/core/modules/SpecificTimeMgr.hpp b/src/core/modules/SpecificTimeMgr.hpp
index 0d8b462048..70322a7443 100644
--- a/src/core/modules/SpecificTimeMgr.hpp
+++ b/src/core/modules/SpecificTimeMgr.hpp
@@ -171,6 +171,7 @@ public slots:
 signals:
 	//! Signal that the configurable twilight altitude for the sun has changed.
 	void twilightAltitudeChanged(double alt);
+	void eventYearChanged();
 
 private:
 	QSettings* conf;
diff --git a/src/gui/AstroCalcAlmanacWidget.cpp b/src/gui/AstroCalcAlmanacWidget.cpp
new file mode 100644
index 0000000000..8272f52a82
--- /dev/null
+++ b/src/gui/AstroCalcAlmanacWidget.cpp
@@ -0,0 +1,398 @@
+/*
+ * Stellarium
+ * Copyright (C) 2023 Alexander Wolf
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA  02110-1335, USA.
+ */
+
+#include "AstroCalcAlmanacWidget.hpp"
+#include "StelApp.hpp"
+#include "StelCore.hpp"
+#include "StelModuleMgr.hpp"
+#include "StelUtils.hpp"
+#include "SpecificTimeMgr.hpp"
+#include "StelLocaleMgr.hpp"
+#include "SolarSystem.hpp"
+
+#include <QPushButton>
+#include <QToolTip>
+#include <QSettings>
+
+AstroCalcAlmanacWidget::AstroCalcAlmanacWidget(QWidget* parent)
+	: QWidget(parent)
+	, sunriseJD(0.)
+	, sunsetJD(0.)
+	, moonriseJD(0.)
+	, moonsetJD(0.)
+	, civilDawnJD(0.)
+	, civilDuskJD(0.)
+	, nauticalDawnJD(0.)
+	, nauticalDuskJD(0.)
+	, astronomicalDawnJD(0.)
+	, astronomicalDuskJD(0.)
+	, ui(new Ui_astroCalcAlmanacWidget)
+{
+}
+
+void AstroCalcAlmanacWidget::setup()
+{
+	ui->setupUi(this);
+	connect(&StelApp::getInstance(), &StelApp::languageChanged, this, &AstroCalcAlmanacWidget::retranslate);
+
+	core = StelApp::getInstance().getCore();
+	specMgr = GETSTELMODULE(SpecificTimeMgr);
+	localeMgr = &StelApp::getInstance().getLocaleMgr();
+
+	populateData();
+
+	connect(core, &StelCore::locationChanged, this, [=](const StelLocation&){ populateData(); });
+	connect(core, &StelCore::currentTimeZoneChanged, this, [=](const QString&){ setSeasonTimes(); setTodayTimes(); });
+	// update the data when "Now" button is pressed or date is changed
+	connect(core, &StelCore::dateChanged, this, [=](){ setSeasonTimes(); setTodayTimes(); });
+	connect(specMgr, SIGNAL(eventYearChanged()), this, SLOT(setSeasonTimes()));
+	connect(specMgr, SIGNAL(eventYearChanged()), this, SLOT(setTodayTimes()));
+
+	connect(ui->buttonMarchEquinoxCurrent, &QPushButton::clicked, this, [=](){specMgr->currentMarchEquinox();});
+	connect(ui->buttonMarchEquinoxNext, &QPushButton::clicked, this, [=](){specMgr->nextMarchEquinox();});
+	connect(ui->buttonMarchEquinoxPrevious, &QPushButton::clicked, this, [=](){specMgr->previousMarchEquinox();});
+
+	connect(ui->buttonSeptemberEquinoxCurrent, &QPushButton::clicked, this, [=](){specMgr->currentSeptemberEquinox();});
+	connect(ui->buttonSeptemberEquinoxNext, &QPushButton::clicked, this, [=](){specMgr->nextSeptemberEquinox();});
+	connect(ui->buttonSeptemberEquinoxPrevious, &QPushButton::clicked, this, [=](){specMgr->previousSeptemberEquinox();});
+
+	connect(ui->buttonJuneSolsticeCurrent, &QPushButton::clicked, this, [=](){specMgr->currentJuneSolstice();});
+	connect(ui->buttonJuneSolsticeNext, &QPushButton::clicked, this, [=](){specMgr->nextJuneSolstice();});
+	connect(ui->buttonJuneSolsticePrevious, &QPushButton::clicked, this, [=](){specMgr->previousJuneSolstice();});
+
+	connect(ui->buttonDecemberSolsticeCurrent, &QPushButton::clicked, this, [=](){specMgr->currentDecemberSolstice();});
+	connect(ui->buttonDecemberSolsticeNext, &QPushButton::clicked, this, [=](){specMgr->nextDecemberSolstice();});
+	connect(ui->buttonDecemberSolsticePrevious, &QPushButton::clicked, this, [=](){specMgr->previousDecemberSolstice();});
+
+	// handling special days
+	connect(ui->buttonMarchEquinoxCurrent, &QPushButton::clicked, this, [=](){setTodayTimes();});
+	connect(ui->buttonSeptemberEquinoxCurrent, &QPushButton::clicked, this, [=](){setTodayTimes();});
+	connect(ui->buttonJuneSolsticeCurrent, &QPushButton::clicked, this, [=](){setTodayTimes();});
+	connect(ui->buttonDecemberSolsticeCurrent, &QPushButton::clicked, this, [=](){setTodayTimes();});
+
+	// handling special times
+	connect(ui->buttonSunrise, &QPushButton::clicked, this, [=](){core->setJD(sunriseJD);});
+	connect(ui->buttonSunset, &QPushButton::clicked, this, [=](){core->setJD(sunsetJD);});
+	connect(ui->buttonMoonrise, &QPushButton::clicked, this, [=](){core->setJD(moonriseJD);});
+	connect(ui->buttonMoonset, &QPushButton::clicked, this, [=](){core->setJD(moonsetJD);});
+	connect(ui->buttonCivilDawn, &QPushButton::clicked, this, [=](){core->setJD(civilDawnJD);});
+	connect(ui->buttonCivilDusk, &QPushButton::clicked, this, [=](){core->setJD(civilDuskJD);});
+	connect(ui->buttonNauticalDawn, &QPushButton::clicked, this, [=](){core->setJD(nauticalDawnJD);});
+	connect(ui->buttonNauticalDusk, &QPushButton::clicked, this, [=](){core->setJD(nauticalDuskJD);});
+	connect(ui->buttonAstronomicalDawn, &QPushButton::clicked, this, [=](){core->setJD(astronomicalDawnJD);});
+	connect(ui->buttonAstronomicalDusk, &QPushButton::clicked, this, [=](){core->setJD(astronomicalDuskJD);});
+
+	QSize button = QSize(24, 24);
+	ui->buttonMarchEquinoxCurrent->setFixedSize(button);
+	ui->buttonMarchEquinoxNext->setFixedSize(button);
+	ui->buttonMarchEquinoxPrevious->setFixedSize(button);
+	ui->buttonJuneSolsticeCurrent->setFixedSize(button);
+	ui->buttonJuneSolsticeNext->setFixedSize(button);
+	ui->buttonJuneSolsticePrevious->setFixedSize(button);
+	ui->buttonSeptemberEquinoxCurrent->setFixedSize(button);
+	ui->buttonSeptemberEquinoxNext->setFixedSize(button);
+	ui->buttonSeptemberEquinoxPrevious->setFixedSize(button);
+	ui->buttonDecemberSolsticeCurrent->setFixedSize(button);
+	ui->buttonDecemberSolsticeNext->setFixedSize(button);
+	ui->buttonDecemberSolsticePrevious->setFixedSize(button);
+	ui->buttonCivilDawn->setFixedSize(button);
+	ui->buttonCivilDusk->setFixedSize(button);
+	ui->buttonNauticalDawn->setFixedSize(button);
+	ui->buttonNauticalDusk->setFixedSize(button);
+	ui->buttonAstronomicalDawn->setFixedSize(button);
+	ui->buttonAstronomicalDusk->setFixedSize(button);
+	ui->buttonSunrise->setFixedSize(button);
+	ui->buttonSunset->setFixedSize(button);
+	ui->buttonMoonrise->setFixedSize(button);
+	ui->buttonMoonset->setFixedSize(button);
+}
+
+void AstroCalcAlmanacWidget::retranslate()
+{
+	ui->retranslateUi(this);
+	populateData();
+}
+
+void AstroCalcAlmanacWidget::populateData()
+{
+	// Set season labels
+	setSeasonLabels();
+	// Compute equinoxes/solstices and fill the time
+	setSeasonTimes();
+	// Compute today events
+	setTodayTimes();
+}
+
+void AstroCalcAlmanacWidget::setSeasonLabels()
+{
+	const float latitide = StelApp::getInstance().getCore()->getCurrentLocation().getLatitude();
+	if (latitide >= 0.f)
+	{
+		// Northern Hemisphere
+		// TRANSLATORS: The name of season
+		ui->labelMarchEquinox->setText(qc_("Spring","season"));
+		// TRANSLATORS: The name of season
+		ui->labelJuneSolstice->setText(qc_("Summer","season"));
+		// TRANSLATORS: The name of season
+		ui->labelSeptemberEquinox->setText(qc_("Fall","season"));
+		// TRANSLATORS: The name of season
+		ui->labelDecemberSolstice->setText(qc_("Winter","season"));
+	}
+	else
+	{
+		// Southern Hemisphere
+		// TRANSLATORS: The name of season
+		ui->labelMarchEquinox->setText(qc_("Fall","season"));
+		// TRANSLATORS: The name of season
+		ui->labelJuneSolstice->setText(qc_("Winter","season"));
+		// TRANSLATORS: The name of season
+		ui->labelSeptemberEquinox->setText(qc_("Spring","season"));
+		// TRANSLATORS: The name of season
+		ui->labelDecemberSolstice->setText(qc_("Summer","season"));
+	}
+}
+
+QString AstroCalcAlmanacWidget::getFormattedDateTime(const double JD, const double utcShift)
+{
+	int year, month, day;
+	StelUtils::getDateFromJulianDay(JD, &year, &month, &day);
+	return QString("%1 %2 %3").arg(QString::number(day), localeMgr->longGenitiveMonthName(month), StelUtils::hoursToHmsStr(StelUtils::getHoursFromJulianDay(JD+utcShift), true));
+}
+
+void AstroCalcAlmanacWidget::setSeasonTimes()
+{
+	const double utcShift = core->getUTCOffset(core->getJD()) / 24.; // Fix DST shift...
+	const double JD = core->getJD() + utcShift;
+	int year, month, day;
+	double jdFirstDay, jdLastDay;
+	StelUtils::getDateFromJulianDay(JD, &year, &month, &day);
+	StelUtils::getJDFromDate(&jdFirstDay, year, 1, 1, 0, 0, 0);
+	StelUtils::getJDFromDate(&jdLastDay, year, 12, 31, 24, 0, 0);
+	const double marchEquinox = specMgr->getEquinox(year, SpecificTimeMgr::Equinox::March);
+	const double septemberEquinox = specMgr->getEquinox(year, SpecificTimeMgr::Equinox::September);
+	const double juneSolstice = specMgr->getSolstice(year, SpecificTimeMgr::Solstice::June);
+	const double decemberSolstice = specMgr->getSolstice(year, SpecificTimeMgr::Solstice::December);
+	QString days = qc_("days", "duration");	
+	int jdDepth = 5;
+	int daysDepth = 2;
+
+	// Current year
+	ui->labelCurrentYear->setText(QString::number(year));
+	ui->labelYearDuration->setText(QString("(%1 %2)").arg(QString::number(jdLastDay-jdFirstDay), days));
+	// Spring/Fall
+	ui->labelMarchEquinoxJD->setText(QString::number(marchEquinox, 'f', jdDepth));
+	ui->labelMarchEquinoxLT->setText(getFormattedDateTime(marchEquinox, utcShift));
+	ui->labelMarchEquinoxDuration->setText(QString("%1 %2").arg(QString::number(juneSolstice-marchEquinox, 'f', daysDepth), days));
+	// Summer/Winter
+	ui->labelJuneSolsticeJD->setText(QString::number(juneSolstice, 'f', jdDepth));
+	ui->labelJuneSolsticeLT->setText(getFormattedDateTime(juneSolstice, utcShift));
+	ui->labelJuneSolsticeDuration->setText(QString("%1 %2").arg(QString::number(septemberEquinox-juneSolstice, 'f', daysDepth), days));
+	// Fall/Spring
+	ui->labelSeptemberEquinoxJD->setText(QString::number(septemberEquinox, 'f', jdDepth));
+	ui->labelSeptemberEquinoxLT->setText(getFormattedDateTime(septemberEquinox, utcShift));
+	ui->labelSeptemberEquinoxDuration->setText(QString("%1 %2").arg(QString::number(decemberSolstice-septemberEquinox, 'f', daysDepth), days));
+	// Winter/Summer
+	ui->labelDecemberSolsticeJD->setText(QString::number(decemberSolstice, 'f', jdDepth));
+	ui->labelDecemberSolsticeLT->setText(getFormattedDateTime(decemberSolstice, utcShift));
+	const double duration = (marchEquinox-jdFirstDay) + (jdLastDay-decemberSolstice);
+	ui->labelDecemberSolsticeDuration->setText(QString("%1 %2").arg(QString::number(duration, 'f', daysDepth), days));
+}
+
+void AstroCalcAlmanacWidget::setTodayTimes()
+{
+	if (core->getCurrentPlanet()!=GETSTELMODULE(SolarSystem)->getEarth())
+		return;
+
+	const double JD = core->getJD();
+	const double utcShift = core->getUTCOffset(JD) / 24.; // Fix DST shift...
+	PlanetP sun = GETSTELMODULE(SolarSystem)->getSun();
+	double duration, duration1, duration2;
+	bool astronomicalTwilightBtn, nauticalTwilightBtn, civilTwilightBtn, sunBtn;
+	QString moonrise, moonset, sunrise, sunset, civilTwilightBegin, civilTwilightEnd, nauticalTwilightBegin,
+		nauticalTwilightEnd, astronomicalTwilightBegin, astronomicalTwilightEnd, dayDuration, nightDuration,
+		civilTwilightDuration, nauticalTwilightDuration, astronomicalTwilightDuration, dash = QChar(0x2014);
+
+	// Moon
+	Vec4d moon = GETSTELMODULE(SolarSystem)->getMoon()->getRTSTime(core, 0.);
+	if (moon[3]==30 || moon[3]<0 || moon[3]>50) // no moonrise on current date
+	{
+		moonrise = dash;
+		ui->buttonMoonrise->setEnabled(false);
+	}
+	else
+	{
+		moonriseJD = moon[0];
+		moonrise = StelUtils::hoursToHmsStr(StelUtils::getHoursFromJulianDay(moonriseJD+utcShift), true);
+		ui->buttonMoonrise->setEnabled(true);
+	}
+
+	if (moon[3]==40 || moon[3]<0 || moon[3]>50) // no moonset on current date
+	{
+		moonset = dash;
+		ui->buttonMoonset->setEnabled(false);
+	}
+	else
+	{
+		moonsetJD = moon[2];
+		moonset = StelUtils::hoursToHmsStr(StelUtils::getHoursFromJulianDay(moonsetJD+utcShift), true);
+		ui->buttonMoonset->setEnabled(true);
+	}
+
+	// Sun
+	Vec4d day = sun->getRTSTime(core, 0.);
+	if (day[3]==0.)
+	{
+		sunriseJD = day[0];
+		sunsetJD = day[2];
+		sunrise = StelUtils::hoursToHmsStr(StelUtils::getHoursFromJulianDay(sunriseJD+utcShift), true);
+		sunset = StelUtils::hoursToHmsStr(StelUtils::getHoursFromJulianDay(sunsetJD+utcShift), true);
+		duration = qAbs(day[2]-day[0])*24.;
+		sunBtn = true;
+	}
+	else
+	{
+		sunrise = sunset = dash;
+		// polar day/night
+		duration = (day[3]>99.) ? 24. : 0.;
+		sunBtn = false;
+	}
+	dayDuration = StelUtils::hoursToHmsStr(duration, true);
+
+	// twilights
+	Vec4d civilTwilight = sun->getRTSTime(core, -6.);
+	Vec4d nauticalTwilight = sun->getRTSTime(core, -12.);
+	Vec4d astronomicalTwilight = sun->getRTSTime(core, -18.);
+	// tooltips
+	// TRANSLATORS: full phrase is "The Sun is XX° below the horizon"
+	QString belowHorizon = q_("The Sun is %1 below the horizon");
+	ui->labelCivilTwilight->setToolTip(belowHorizon.arg("6°"));
+	ui->labelNauticalTwilight->setToolTip(belowHorizon.arg("12°"));
+	ui->labelAstronomicalTwilight->setToolTip(belowHorizon.arg("18°"));
+	ui->labelDayDuration->setToolTip(q_("The duration of daytime"));
+	ui->labelNightDuration->setToolTip(q_("The duration of the astronomical night"));
+	QString twilights = q_("The duration of morning and evening twilights");
+	ui->labelCivilTwilightDuration->setToolTip(twilights);
+	ui->labelNauticalTwilightDuration->setToolTip(twilights);
+	ui->labelAstronomicalTwilightDuration->setToolTip(twilights);
+
+	if (astronomicalTwilight[3]==0.)
+	{
+		astronomicalDawnJD = astronomicalTwilight[0];
+		astronomicalDuskJD = astronomicalTwilight[2];
+		astronomicalTwilightBegin = StelUtils::hoursToHmsStr(StelUtils::getHoursFromJulianDay(astronomicalDawnJD+utcShift), true);
+		astronomicalTwilightEnd = StelUtils::hoursToHmsStr(StelUtils::getHoursFromJulianDay(astronomicalDuskJD+utcShift), true);
+		duration1 = (nauticalTwilight[2]-astronomicalTwilight[2])*24.;
+		if (duration1 > 0.)
+			duration1 -= 24.;
+		duration2 = (astronomicalTwilight[0]-nauticalTwilight[0])*24.;
+		if (duration2 > 0.)
+			duration2 -= 24.;
+		duration = qAbs(duration1) + qAbs(duration2);
+		nightDuration = StelUtils::hoursToHmsStr(24.0 - qAbs(astronomicalTwilight[2]-astronomicalTwilight[0])*24., true);
+		astronomicalTwilightBtn = true;
+	}
+	else
+	{
+		astronomicalTwilightBegin = astronomicalTwilightEnd = dash;
+		duration = 0.;
+		// polar night/day
+		if (day[3]<-99.)
+			nightDuration = StelUtils::hoursToHmsStr(24., true);
+		else
+			nightDuration = StelUtils::hoursToHmsStr(duration, true);		
+		astronomicalTwilightBtn = false;
+	}
+	astronomicalTwilightDuration = StelUtils::hoursToHmsStr(duration, true);
+
+	if (nauticalTwilight[3]==0.)
+	{
+		nauticalDawnJD = nauticalTwilight[0];
+		nauticalDuskJD = nauticalTwilight[2];
+		nauticalTwilightBegin = StelUtils::hoursToHmsStr(StelUtils::getHoursFromJulianDay(nauticalDawnJD+utcShift), true);
+		nauticalTwilightEnd = StelUtils::hoursToHmsStr(StelUtils::getHoursFromJulianDay(nauticalDuskJD+utcShift), true);
+		duration1 = (civilTwilight[2]-nauticalTwilight[2])*24.;
+		if (duration1 > 0.)
+			duration1 -= 24.;
+		duration2 = (nauticalTwilight[0]-civilTwilight[0])*24.;
+		if (duration2 > 0.)
+			duration2 -= 24.;
+		duration = qAbs(duration1) + qAbs(duration2);
+		nauticalTwilightBtn = true;
+	}
+	else
+	{
+		nauticalTwilightBegin = nauticalTwilightEnd = dash;
+		duration = 0.;
+		nauticalTwilightBtn = false;
+	}
+	nauticalTwilightDuration = StelUtils::hoursToHmsStr(duration, true);
+
+	if (civilTwilight[3]==0.)
+	{
+		civilDawnJD = civilTwilight[0];
+		civilDuskJD = civilTwilight[2];
+		civilTwilightBegin = StelUtils::hoursToHmsStr(StelUtils::getHoursFromJulianDay(civilDawnJD+utcShift), true);
+		civilTwilightEnd = StelUtils::hoursToHmsStr(StelUtils::getHoursFromJulianDay(civilDuskJD+utcShift), true);
+		duration1 = (day[2]-civilTwilight[2])*24.;
+		if (duration1 > 0.)
+			duration1 -= 24.;
+		duration2 = (civilTwilight[0]-day[0])*24.;
+		if (duration2 > 0.)
+			duration2 -= 24.;
+		duration = qAbs(duration1) + qAbs(duration2);
+		civilTwilightBtn = true;
+	}
+	else
+	{
+		civilTwilightBegin = civilTwilightEnd = dash;
+		duration = 0.;
+		civilTwilightBtn = false;
+	}
+	civilTwilightDuration = StelUtils::hoursToHmsStr(duration, true);
+
+	// fill the data
+	ui->labelToday->setText(QString("%1 (%2)").arg(q_("Today"), localeMgr->getPrintableDateLocal(JD)));
+
+	ui->labelDayDuration->setText(dayDuration);
+	ui->labelCivilTwilightBegin->setText(civilTwilightBegin);
+	ui->labelCivilTwilightEnd->setText(civilTwilightEnd);
+	ui->labelCivilTwilightDuration->setText(civilTwilightDuration);
+	ui->labelNauticalTwilightBegin->setText(nauticalTwilightBegin);
+	ui->labelNauticalTwilightEnd->setText(nauticalTwilightEnd);
+	ui->labelNauticalTwilightDuration->setText(nauticalTwilightDuration);
+	ui->labelAstronomicalTwilightBegin->setText(astronomicalTwilightBegin);
+	ui->labelAstronomicalTwilightEnd->setText(astronomicalTwilightEnd);
+	ui->labelAstronomicalTwilightDuration->setText(astronomicalTwilightDuration);
+	ui->labelNightDuration->setText(nightDuration);
+
+	ui->labelSunrise->setText(sunrise);
+	ui->labelSunset->setText(sunset);
+	ui->labelMoonRise->setText(moonrise);
+	ui->labelMoonSet->setText(moonset);
+
+	// buttons
+	ui->buttonSunrise->setEnabled(sunBtn);
+	ui->buttonSunset->setEnabled(sunBtn);
+	ui->buttonAstronomicalDawn->setEnabled(astronomicalTwilightBtn);
+	ui->buttonAstronomicalDusk->setEnabled(astronomicalTwilightBtn);
+	ui->buttonNauticalDawn->setEnabled(nauticalTwilightBtn);
+	ui->buttonNauticalDusk->setEnabled(nauticalTwilightBtn);
+	ui->buttonCivilDawn->setEnabled(civilTwilightBtn);
+	ui->buttonCivilDusk->setEnabled(civilTwilightBtn);
+}
diff --git a/src/gui/AstroCalcAlmanacWidget.hpp b/src/gui/AstroCalcAlmanacWidget.hpp
new file mode 100644
index 0000000000..bf232f4fc8
--- /dev/null
+++ b/src/gui/AstroCalcAlmanacWidget.hpp
@@ -0,0 +1,54 @@
+/*
+ * Stellarium
+ * Copyright (C) 2023 Alexander Wolf
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA  02110-1335, USA.
+ */
+
+#ifndef ASTROCALC_ALMANAC_WIDGET
+#define ASTROCALC_ALMANAC_WIDGET
+
+#include <memory>
+#include <QWidget>
+#include "ui_astroCalcAlmanacWidget.h"
+
+class AstroCalcAlmanacWidget : public QWidget
+{
+    Q_OBJECT
+public:
+    AstroCalcAlmanacWidget(QWidget* parent = nullptr);
+    void setup();
+    void retranslate();
+
+private slots:
+    void setSeasonLabels();
+    void setSeasonTimes();
+    void setTodayTimes();
+
+private:
+    class StelCore* core;
+    class SpecificTimeMgr* specMgr;
+    class StelLocaleMgr* localeMgr;
+
+    double sunriseJD, sunsetJD, moonriseJD, moonsetJD, civilDawnJD, civilDuskJD, nauticalDawnJD, nauticalDuskJD, astronomicalDawnJD, astronomicalDuskJD;
+
+    void populateData();
+    // method to get a formatted string for date and time of equinox/solstice
+    QString getFormattedDateTime(const double JD, const double utcShift);
+
+    std::unique_ptr<Ui_astroCalcAlmanacWidget> ui;
+};
+
+#endif
diff --git a/src/gui/AstroCalcDialog.cpp b/src/gui/AstroCalcDialog.cpp
index da873fc771..4e84c5a6bc 100644
--- a/src/gui/AstroCalcDialog.cpp
+++ b/src/gui/AstroCalcDialog.cpp
@@ -202,6 +202,9 @@ void AstroCalcDialog::retranslate()
 		// by causing the list items to be laid out again.
 		updateTabBarListWidgetWidth();
 		populateToolTips();
+		// Almanac
+		ui->astroCalcAlmanac->retranslate();
+
 	}
 }
 
@@ -583,6 +586,11 @@ void AstroCalcDialog::createDialogContent()
 	connect(ui->pushButtonExtraEphemerisDialog, SIGNAL(clicked()), this, SLOT(showExtraEphemerisDialog()));
 	connect(ui->pushButtonCustomStepsDialog, SIGNAL(clicked()), this, SLOT(showCustomStepsDialog()));
 
+	// Tab: Almanac
+	ui->astroCalcAlmanac->setup();
+	connect(core, SIGNAL(locationChanged(StelLocation)), this, SLOT(updateAlmanacWidgetVisibility()));
+	updateAlmanacWidgetVisibility();
+
 	updateTabBarListWidgetWidth();
 
 	ui->celestialPositionsUpdateButton->setShortcut(QKeySequence("Shift+F10"));
@@ -605,6 +613,20 @@ void AstroCalcDialog::createDialogContent()
 	connect(ui->exportPCPushButton, &QPushButton::clicked, this, [=]{ saveGraph(ui->pcChartView); });
 }
 
+void AstroCalcDialog::updateAlmanacWidgetVisibility()
+{
+	const int almanacTabIndex = 8;
+	const bool onEarth = core->getCurrentPlanet()==solarSystem->getEarth();
+
+	// hide Almanac tab or not
+	ui->stackListWidget->item(almanacTabIndex)->setHidden(!onEarth);
+	ui->astroCalcAlmanac->setVisible(onEarth);
+
+	// move to first tab if Alamac was visible when user are moved to non-terrestial location
+	if (!onEarth && ui->stackListWidget->currentRow()==almanacTabIndex)
+		ui->stackListWidget->setCurrentRow(0);
+}
+
 void AstroCalcDialog::populateToolTips()
 {
 	QString validDates = QString("%1 1582/10/15 - 9999/12/31").arg(q_("Gregorian dates. Valid range:"));
diff --git a/src/gui/AstroCalcDialog.hpp b/src/gui/AstroCalcDialog.hpp
index b56d720b5f..d229932a62 100644
--- a/src/gui/AstroCalcDialog.hpp
+++ b/src/gui/AstroCalcDialog.hpp
@@ -438,6 +438,8 @@ private slots:
 	void showExtraEphemerisDialog();
 	void showCustomStepsDialog();
 
+	void updateAlmanacWidgetVisibility();
+
 	void saveGraph(QChartView *graph);
 
 private:
diff --git a/src/gui/astroCalcAlmanacWidget.ui b/src/gui/astroCalcAlmanacWidget.ui
new file mode 100644
index 0000000000..a5fdb49615
--- /dev/null
+++ b/src/gui/astroCalcAlmanacWidget.ui
@@ -0,0 +1,1085 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>astroCalcAlmanacWidget</class>
+ <widget class="QWidget" name="astroCalcAlmanacWidget">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>623</width>
+    <height>305</height>
+   </rect>
+  </property>
+  <property name="sizePolicy">
+   <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+    <horstretch>0</horstretch>
+    <verstretch>0</verstretch>
+   </sizepolicy>
+  </property>
+  <property name="windowTitle">
+   <string notr="true">Form</string>
+  </property>
+  <layout class="QGridLayout" name="gridLayout">
+   <property name="leftMargin">
+    <number>0</number>
+   </property>
+   <property name="topMargin">
+    <number>0</number>
+   </property>
+   <property name="rightMargin">
+    <number>0</number>
+   </property>
+   <property name="bottomMargin">
+    <number>0</number>
+   </property>
+   <item row="0" column="0">
+    <widget class="QTabWidget" name="tabWidget">
+     <property name="tabPosition">
+      <enum>QTabWidget::South</enum>
+     </property>
+     <property name="currentIndex">
+      <number>0</number>
+     </property>
+     <widget class="QWidget" name="tabSpecificTime">
+      <property name="sizePolicy">
+       <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+        <horstretch>0</horstretch>
+        <verstretch>0</verstretch>
+       </sizepolicy>
+      </property>
+      <attribute name="title">
+       <string>Specific Time</string>
+      </attribute>
+      <layout class="QGridLayout" name="gridLayoutSpecificTime">
+       <item row="2" column="8">
+        <widget class="QLabel" name="labelCivilTwilightBegin">
+         <property name="text">
+          <string/>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="5" column="7" colspan="6">
+        <widget class="Line" name="line_5">
+         <property name="minimumSize">
+          <size>
+           <width>0</width>
+           <height>1</height>
+          </size>
+         </property>
+         <property name="maximumSize">
+          <size>
+           <width>16777215</width>
+           <height>1</height>
+          </size>
+         </property>
+         <property name="orientation">
+          <enum>Qt::Horizontal</enum>
+         </property>
+        </widget>
+       </item>
+       <item row="9" column="7" colspan="5">
+        <widget class="QLabel" name="labelNight">
+         <property name="font">
+          <font>
+           <italic>true</italic>
+          </font>
+         </property>
+         <property name="text">
+          <string>Astronomical Night</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="8" column="1">
+        <widget class="QLabel" name="labelJD2">
+         <property name="text">
+          <string>Julian Day</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="3" column="8">
+        <widget class="QLabel" name="labelNauticalTwilightBegin">
+         <property name="text">
+          <string/>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="4" column="9">
+        <widget class="QPushButton" name="buttonAstronomicalDawn">
+         <property name="toolTip">
+          <string>Morning astronomical twilight</string>
+         </property>
+         <property name="text">
+          <string/>
+         </property>
+         <property name="icon">
+          <iconset resource="../../data/gui/guiRes.qrc">
+           <normaloff>:/graphicGui/bbtTime-off.png</normaloff>
+           <disabledoff>:/graphicGui/bbtTime-off.png</disabledoff>:/graphicGui/bbtTime-off.png</iconset>
+         </property>
+        </widget>
+       </item>
+       <item row="9" column="1">
+        <widget class="QLabel" name="labelDuration2">
+         <property name="text">
+          <string>Duration</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="0" column="7" colspan="6">
+        <widget class="QLabel" name="labelToday">
+         <property name="font">
+          <font>
+           <bold>true</bold>
+          </font>
+         </property>
+         <property name="text">
+          <string>Today</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="4" column="3">
+        <widget class="QLabel" name="labelMarchEquinoxDuration"/>
+       </item>
+       <item row="8" column="11">
+        <widget class="QPushButton" name="buttonMoonset">
+         <property name="toolTip">
+          <string>Today's moonset</string>
+         </property>
+         <property name="text">
+          <string/>
+         </property>
+         <property name="icon">
+          <iconset resource="../../data/gui/guiRes.qrc">
+           <normaloff>:/graphicGui/bbtTime-off.png</normaloff>
+           <disabledoff>:/graphicGui/bbtTime-off.png</disabledoff>:/graphicGui/bbtTime-off.png</iconset>
+         </property>
+        </widget>
+       </item>
+       <item row="6" column="12">
+        <widget class="QLabel" name="labelDurationColumn2">
+         <property name="text">
+          <string>Duration</string>
+         </property>
+        </widget>
+       </item>
+       <item row="6" column="4" rowspan="4">
+        <widget class="Line" name="line_3">
+         <property name="minimumSize">
+          <size>
+           <width>1</width>
+           <height>0</height>
+          </size>
+         </property>
+         <property name="maximumSize">
+          <size>
+           <width>1</width>
+           <height>16777215</height>
+          </size>
+         </property>
+         <property name="orientation">
+          <enum>Qt::Vertical</enum>
+         </property>
+        </widget>
+       </item>
+       <item row="6" column="3">
+        <layout class="QHBoxLayout" name="SeptemberEquinoxLayout">
+         <item>
+          <widget class="QLabel" name="labelSeptemberEquinox">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="text">
+            <string comment="season">Fall</string>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QPushButton" name="buttonSeptemberEquinoxPrevious">
+           <property name="toolTip">
+            <string>Previous September Equinox</string>
+           </property>
+           <property name="icon">
+            <iconset resource="../../data/gui/guiRes.qrc">
+             <normaloff>:/graphicGui/btTimeRewind-off.png</normaloff>
+             <disabledoff>:/graphicGui/btTimeRewind-off.png</disabledoff>:/graphicGui/btTimeRewind-off.png</iconset>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QPushButton" name="buttonSeptemberEquinoxCurrent">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="toolTip">
+            <string>Current September Equinox</string>
+           </property>
+           <property name="icon">
+            <iconset resource="../../data/gui/guiRes.qrc">
+             <normaloff>:/graphicGui/bbtTime-off.png</normaloff>
+             <disabledoff>:/graphicGui/bbtTime-off.png</disabledoff>:/graphicGui/bbtTime-off.png</iconset>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QPushButton" name="buttonSeptemberEquinoxNext">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="toolTip">
+            <string>Next September Equinox</string>
+           </property>
+           <property name="icon">
+            <iconset resource="../../data/gui/guiRes.qrc">
+             <normaloff>:/graphicGui/btTimeForward-off.png</normaloff>
+             <disabledoff>:/graphicGui/btTimeForward-off.png</disabledoff>:/graphicGui/btTimeForward-off.png</iconset>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </item>
+       <item row="4" column="8">
+        <widget class="QLabel" name="labelAstronomicalTwilightBegin">
+         <property name="text">
+          <string/>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="2" column="3">
+        <widget class="QLabel" name="labelMarchEquinoxLT"/>
+       </item>
+       <item row="2" column="1">
+        <widget class="QLabel" name="labelLT1">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
+         <property name="text">
+          <string>Local Time</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="3" column="12">
+        <widget class="QLabel" name="labelNauticalTwilightDuration">
+         <property name="text">
+          <string/>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="2" column="5">
+        <widget class="QLabel" name="labelJuneSolsticeLT"/>
+       </item>
+       <item row="2" column="7">
+        <widget class="QLabel" name="labelCivilTwilight">
+         <property name="text">
+          <string comment="twilight">Civil</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="0" column="6" rowspan="10">
+        <widget class="Line" name="lineDelimiterSections">
+         <property name="minimumSize">
+          <size>
+           <width>1</width>
+           <height>0</height>
+          </size>
+         </property>
+         <property name="maximumSize">
+          <size>
+           <width>1</width>
+           <height>16777215</height>
+          </size>
+         </property>
+         <property name="orientation">
+          <enum>Qt::Vertical</enum>
+         </property>
+        </widget>
+       </item>
+       <item row="1" column="10" colspan="2">
+        <widget class="QLabel" name="labelDusk">
+         <property name="text">
+          <string>Dusk</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="4" column="5">
+        <widget class="QLabel" name="labelJuneSolsticeDuration"/>
+       </item>
+       <item row="1" column="8" colspan="2">
+        <widget class="QLabel" name="labelDawn">
+         <property name="text">
+          <string>Dawn</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="1" column="7">
+        <widget class="QLabel" name="labelTwilight">
+         <property name="text">
+          <string>Twilight</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="3" column="9">
+        <widget class="QPushButton" name="buttonNauticalDawn">
+         <property name="toolTip">
+          <string>Morning nautical twilight</string>
+         </property>
+         <property name="text">
+          <string/>
+         </property>
+         <property name="icon">
+          <iconset resource="../../data/gui/guiRes.qrc">
+           <normaloff>:/graphicGui/bbtTime-off.png</normaloff>
+           <disabledoff>:/graphicGui/bbtTime-off.png</disabledoff>:/graphicGui/bbtTime-off.png</iconset>
+         </property>
+        </widget>
+       </item>
+       <item row="7" column="1">
+        <widget class="QLabel" name="labelLT2">
+         <property name="text">
+          <string>Local Time</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="7" column="3">
+        <widget class="QLabel" name="labelSeptemberEquinoxLT"/>
+       </item>
+       <item row="2" column="9">
+        <widget class="QPushButton" name="buttonCivilDawn">
+         <property name="toolTip">
+          <string>Morning civil twilight</string>
+         </property>
+         <property name="text">
+          <string/>
+         </property>
+         <property name="icon">
+          <iconset resource="../../data/gui/guiRes.qrc">
+           <normaloff>:/graphicGui/bbtTime-off.png</normaloff>
+           <disabledoff>:/graphicGui/bbtTime-off.png</disabledoff>:/graphicGui/bbtTime-off.png</iconset>
+         </property>
+        </widget>
+       </item>
+       <item row="1" column="3">
+        <layout class="QHBoxLayout" name="MarchEquinoxLayout">
+         <item>
+          <widget class="QLabel" name="labelMarchEquinox">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="text">
+            <string comment="season">Spring</string>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QPushButton" name="buttonMarchEquinoxPrevious">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="toolTip">
+            <string>Previous March Equinox</string>
+           </property>
+           <property name="icon">
+            <iconset resource="../../data/gui/guiRes.qrc">
+             <normaloff>:/graphicGui/btTimeRewind-off.png</normaloff>
+             <disabledoff>:/graphicGui/btTimeRewind-off.png</disabledoff>:/graphicGui/btTimeRewind-off.png</iconset>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QPushButton" name="buttonMarchEquinoxCurrent">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="toolTip">
+            <string>Current March Equinox</string>
+           </property>
+           <property name="icon">
+            <iconset resource="../../data/gui/guiRes.qrc">
+             <normaloff>:/graphicGui/bbtTime-off.png</normaloff>
+             <disabledoff>:/graphicGui/bbtTime-off.png</disabledoff>:/graphicGui/bbtTime-off.png</iconset>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QPushButton" name="buttonMarchEquinoxNext">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="toolTip">
+            <string>Next March Equinox</string>
+           </property>
+           <property name="icon">
+            <iconset resource="../../data/gui/guiRes.qrc">
+             <normaloff>:/graphicGui/btTimeForward-off.png</normaloff>
+             <disabledoff>:/graphicGui/btTimeForward-off.png</disabledoff>:/graphicGui/btTimeForward-off.png</iconset>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </item>
+       <item row="1" column="5">
+        <layout class="QHBoxLayout" name="JuneSolsticeLayout">
+         <item>
+          <widget class="QLabel" name="labelJuneSolstice">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="text">
+            <string comment="season">Summer</string>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QPushButton" name="buttonJuneSolsticePrevious">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="toolTip">
+            <string>Previous June Solstice</string>
+           </property>
+           <property name="icon">
+            <iconset resource="../../data/gui/guiRes.qrc">
+             <normaloff>:/graphicGui/btTimeRewind-off.png</normaloff>
+             <disabledoff>:/graphicGui/btTimeRewind-off.png</disabledoff>:/graphicGui/btTimeRewind-off.png</iconset>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QPushButton" name="buttonJuneSolsticeCurrent">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="toolTip">
+            <string>Current June Solstice</string>
+           </property>
+           <property name="icon">
+            <iconset resource="../../data/gui/guiRes.qrc">
+             <normaloff>:/graphicGui/bbtTime-off.png</normaloff>
+             <disabledoff>:/graphicGui/bbtTime-off.png</disabledoff>:/graphicGui/bbtTime-off.png</iconset>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QPushButton" name="buttonJuneSolsticeNext">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="toolTip">
+            <string>Next June Solstice</string>
+           </property>
+           <property name="icon">
+            <iconset resource="../../data/gui/guiRes.qrc">
+             <normaloff>:/graphicGui/btTimeForward-off.png</normaloff>
+             <disabledoff>:/graphicGui/btTimeForward-off.png</disabledoff>:/graphicGui/btTimeForward-off.png</iconset>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </item>
+       <item row="2" column="10">
+        <widget class="QLabel" name="labelCivilTwilightEnd">
+         <property name="text">
+          <string/>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="3" column="11">
+        <widget class="QPushButton" name="buttonNauticalDusk">
+         <property name="toolTip">
+          <string>Evening nautical twilight</string>
+         </property>
+         <property name="text">
+          <string/>
+         </property>
+         <property name="icon">
+          <iconset resource="../../data/gui/guiRes.qrc">
+           <normaloff>:/graphicGui/bbtTime-off.png</normaloff>
+           <disabledoff>:/graphicGui/bbtTime-off.png</disabledoff>:/graphicGui/bbtTime-off.png</iconset>
+         </property>
+        </widget>
+       </item>
+       <item row="7" column="12">
+        <widget class="QLabel" name="labelDayDuration">
+         <property name="text">
+          <string/>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="9" column="5">
+        <widget class="QLabel" name="labelDecemberSolsticeDuration"/>
+       </item>
+       <item row="3" column="7">
+        <widget class="QLabel" name="labelNauticalTwilight">
+         <property name="text">
+          <string comment="twilight">Nautical</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="8" column="5">
+        <widget class="QLabel" name="labelDecemberSolsticeJD"/>
+       </item>
+       <item row="4" column="1">
+        <widget class="QLabel" name="labelDuration1">
+         <property name="text">
+          <string>Duration</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="5" column="3" colspan="3">
+        <widget class="Line" name="line">
+         <property name="minimumSize">
+          <size>
+           <width>0</width>
+           <height>1</height>
+          </size>
+         </property>
+         <property name="maximumSize">
+          <size>
+           <width>16777215</width>
+           <height>1</height>
+          </size>
+         </property>
+         <property name="orientation">
+          <enum>Qt::Horizontal</enum>
+         </property>
+        </widget>
+       </item>
+       <item row="1" column="12">
+        <widget class="QLabel" name="labelDurationColumn1">
+         <property name="text">
+          <string>Duration</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="8" column="7">
+        <widget class="QLabel" name="labelMoon">
+         <property name="text">
+          <string>Moon</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="6" column="8" colspan="2">
+        <widget class="QLabel" name="labelRise">
+         <property name="text">
+          <string>Rise</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="9" column="12">
+        <widget class="QLabel" name="labelNightDuration">
+         <property name="font">
+          <font>
+           <italic>true</italic>
+          </font>
+         </property>
+         <property name="toolTip">
+          <string/>
+         </property>
+         <property name="text">
+          <string/>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="1" column="1">
+        <layout class="QHBoxLayout" name="YearLayout">
+         <item>
+          <widget class="QLabel" name="labelYear">
+           <property name="text">
+            <string>Year</string>
+           </property>
+           <property name="alignment">
+            <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QLabel" name="labelCurrentYear">
+           <property name="font">
+            <font>
+             <bold>true</bold>
+            </font>
+           </property>
+           <property name="text">
+            <string/>
+           </property>
+           <property name="alignment">
+            <set>Qt::AlignCenter</set>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QLabel" name="labelYearDuration">
+           <property name="text">
+            <string/>
+           </property>
+           <property name="alignment">
+            <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </item>
+       <item row="7" column="7">
+        <widget class="QLabel" name="labelSun">
+         <property name="text">
+          <string>Sun</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="6" column="5">
+        <layout class="QHBoxLayout" name="DecemberSolsticeLayout">
+         <item>
+          <widget class="QLabel" name="labelDecemberSolstice">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="text">
+            <string comment="season">Winter</string>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QPushButton" name="buttonDecemberSolsticePrevious">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="toolTip">
+            <string>Previous December Solstice</string>
+           </property>
+           <property name="icon">
+            <iconset resource="../../data/gui/guiRes.qrc">
+             <normaloff>:/graphicGui/btTimeRewind-off.png</normaloff>
+             <disabledoff>:/graphicGui/btTimeRewind-off.png</disabledoff>:/graphicGui/btTimeRewind-off.png</iconset>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QPushButton" name="buttonDecemberSolsticeCurrent">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="toolTip">
+            <string>Current December Solstice</string>
+           </property>
+           <property name="icon">
+            <iconset resource="../../data/gui/guiRes.qrc">
+             <normaloff>:/graphicGui/bbtTime-off.png</normaloff>
+             <disabledoff>:/graphicGui/bbtTime-off.png</disabledoff>:/graphicGui/bbtTime-off.png</iconset>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QPushButton" name="buttonDecemberSolsticeNext">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="toolTip">
+            <string>Next December Solstice</string>
+           </property>
+           <property name="icon">
+            <iconset resource="../../data/gui/guiRes.qrc">
+             <normaloff>:/graphicGui/btTimeForward-off.png</normaloff>
+             <disabledoff>:/graphicGui/btTimeForward-off.png</disabledoff>:/graphicGui/btTimeForward-off.png</iconset>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </item>
+       <item row="3" column="3">
+        <widget class="QLabel" name="labelMarchEquinoxJD"/>
+       </item>
+       <item row="9" column="3">
+        <widget class="QLabel" name="labelSeptemberEquinoxDuration"/>
+       </item>
+       <item row="4" column="7">
+        <widget class="QLabel" name="labelAstronomicalTwilight">
+         <property name="text">
+          <string comment="twilight">Astronomical</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="8" column="9">
+        <widget class="QPushButton" name="buttonMoonrise">
+         <property name="toolTip">
+          <string>Today's moonrise</string>
+         </property>
+         <property name="text">
+          <string/>
+         </property>
+         <property name="icon">
+          <iconset resource="../../data/gui/guiRes.qrc">
+           <normaloff>:/graphicGui/bbtTime-off.png</normaloff>
+           <disabledoff>:/graphicGui/bbtTime-off.png</disabledoff>:/graphicGui/bbtTime-off.png</iconset>
+         </property>
+        </widget>
+       </item>
+       <item row="3" column="1">
+        <widget class="QLabel" name="labelJD1">
+         <property name="text">
+          <string>Julian Day</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="3" column="10">
+        <widget class="QLabel" name="labelNauticalTwilightEnd">
+         <property name="text">
+          <string/>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="4" column="12">
+        <widget class="QLabel" name="labelAstronomicalTwilightDuration">
+         <property name="text">
+          <string/>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="7" column="5">
+        <widget class="QLabel" name="labelDecemberSolsticeLT"/>
+       </item>
+       <item row="0" column="1" colspan="5">
+        <widget class="QLabel" name="labelSeasons">
+         <property name="font">
+          <font>
+           <bold>true</bold>
+          </font>
+         </property>
+         <property name="text">
+          <string>Seasons</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="4" column="11">
+        <widget class="QPushButton" name="buttonAstronomicalDusk">
+         <property name="toolTip">
+          <string>Evening astronomical twilight</string>
+         </property>
+         <property name="text">
+          <string/>
+         </property>
+         <property name="icon">
+          <iconset resource="../../data/gui/guiRes.qrc">
+           <normaloff>:/graphicGui/bbtTime-off.png</normaloff>
+           <disabledoff>:/graphicGui/bbtTime-off.png</disabledoff>:/graphicGui/bbtTime-off.png</iconset>
+         </property>
+        </widget>
+       </item>
+       <item row="1" column="4" rowspan="4">
+        <widget class="Line" name="line_2">
+         <property name="minimumSize">
+          <size>
+           <width>1</width>
+           <height>0</height>
+          </size>
+         </property>
+         <property name="maximumSize">
+          <size>
+           <width>1</width>
+           <height>16777215</height>
+          </size>
+         </property>
+         <property name="orientation">
+          <enum>Qt::Vertical</enum>
+         </property>
+        </widget>
+       </item>
+       <item row="8" column="3">
+        <widget class="QLabel" name="labelSeptemberEquinoxJD"/>
+       </item>
+       <item row="7" column="11">
+        <widget class="QPushButton" name="buttonSunset">
+         <property name="toolTip">
+          <string>Today's sunset</string>
+         </property>
+         <property name="text">
+          <string/>
+         </property>
+         <property name="icon">
+          <iconset resource="../../data/gui/guiRes.qrc">
+           <normaloff>:/graphicGui/bbtTime-off.png</normaloff>
+           <disabledoff>:/graphicGui/bbtTime-off.png</disabledoff>:/graphicGui/bbtTime-off.png</iconset>
+         </property>
+        </widget>
+       </item>
+       <item row="8" column="8">
+        <widget class="QLabel" name="labelMoonRise">
+         <property name="text">
+          <string/>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="7" column="9">
+        <widget class="QPushButton" name="buttonSunrise">
+         <property name="toolTip">
+          <string>Today's sunrise</string>
+         </property>
+         <property name="text">
+          <string/>
+         </property>
+         <property name="icon">
+          <iconset resource="../../data/gui/guiRes.qrc">
+           <normaloff>:/graphicGui/bbtTime-off.png</normaloff>
+           <disabledoff>:/graphicGui/bbtTime-off.png</disabledoff>:/graphicGui/bbtTime-off.png</iconset>
+         </property>
+        </widget>
+       </item>
+       <item row="8" column="10">
+        <widget class="QLabel" name="labelMoonSet">
+         <property name="text">
+          <string/>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="7" column="10">
+        <widget class="QLabel" name="labelSunset">
+         <property name="text">
+          <string/>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="3" column="5">
+        <widget class="QLabel" name="labelJuneSolsticeJD"/>
+       </item>
+       <item row="1" column="2" rowspan="9">
+        <widget class="Line" name="line_4">
+         <property name="minimumSize">
+          <size>
+           <width>1</width>
+           <height>0</height>
+          </size>
+         </property>
+         <property name="maximumSize">
+          <size>
+           <width>1</width>
+           <height>16777215</height>
+          </size>
+         </property>
+         <property name="orientation">
+          <enum>Qt::Vertical</enum>
+         </property>
+        </widget>
+       </item>
+       <item row="2" column="12">
+        <widget class="QLabel" name="labelCivilTwilightDuration">
+         <property name="text">
+          <string/>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="6" column="10" colspan="2">
+        <widget class="QLabel" name="labelSet">
+         <property name="text">
+          <string>Set</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="2" column="11">
+        <widget class="QPushButton" name="buttonCivilDusk">
+         <property name="toolTip">
+          <string>Evening civil twilight</string>
+         </property>
+         <property name="text">
+          <string/>
+         </property>
+         <property name="icon">
+          <iconset resource="../../data/gui/guiRes.qrc">
+           <normaloff>:/graphicGui/bbtTime-off.png</normaloff>
+           <disabledoff>:/graphicGui/bbtTime-off.png</disabledoff>:/graphicGui/bbtTime-off.png</iconset>
+         </property>
+        </widget>
+       </item>
+       <item row="4" column="10">
+        <widget class="QLabel" name="labelAstronomicalTwilightEnd">
+         <property name="text">
+          <string/>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="7" column="8">
+        <widget class="QLabel" name="labelSunrise">
+         <property name="text">
+          <string/>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="10" column="1">
+        <spacer name="verticalSpacer">
+         <property name="orientation">
+          <enum>Qt::Vertical</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>20</width>
+           <height>40</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QWidget" name="tab_2">
+      <attribute name="title">
+       <string>Tab 2</string>
+      </attribute>
+     </widget>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources>
+  <include location="../../data/gui/guiRes.qrc"/>
+ </resources>
+ <connections/>
+</ui>
diff --git a/src/gui/astroCalcDialog.ui b/src/gui/astroCalcDialog.ui
index 7a5fc45e80..fa07e186ea 100644
--- a/src/gui/astroCalcDialog.ui
+++ b/src/gui/astroCalcDialog.ui
@@ -192,6 +192,17 @@
           </iconset>
          </property>
         </item>
+        <item>
+         <property name="text">
+          <string>Almanac</string>
+         </property>
+         <property name="icon">
+          <iconset>
+           <normalon>:/graphicGui/tabSSO.png</normalon>
+           <selectedon>:/graphicGui/tabSSO-selected.png</selectedon>
+          </iconset>
+         </property>
+        </item>
        </widget>
       </item>
       <item row="1" column="0">
@@ -2867,6 +2878,20 @@
           </item>
          </layout>
         </widget>
+        <widget class="QWidget" name="stackedWidgetPage9">
+         <layout class="QGridLayout" name="gridLayout_27">
+          <item row="0" column="0">
+           <widget class="AstroCalcAlmanacWidget" name="astroCalcAlmanac" native="true">
+            <property name="sizePolicy">
+             <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+              <horstretch>0</horstretch>
+              <verstretch>0</verstretch>
+             </sizepolicy>
+            </property>
+           </widget>
+          </item>
+         </layout>
+        </widget>
        </widget>
       </item>
      </layout>
@@ -2896,6 +2921,12 @@
    <extends>QGraphicsView</extends>
    <header>QtCharts/qchartview.h</header>
   </customwidget>
+  <customwidget>
+   <class>AstroCalcAlmanacWidget</class>
+   <extends>QWidget</extends>
+   <header>AstroCalcAlmanacWidget.hpp</header>
+   <container>1</container>
+  </customwidget>
  </customwidgets>
  <resources>
   <include location="../../data/gui/guiRes.qrc"/>