Islamic Calculation Library (ICLib) contains calculations/algorithms needed specifically by muslims and people in muslim countries, such as salat (prayer) times, qibla direction, and Hijri conversion.
This library is written in Java and is a porting of the Python version. More information about the calculation method you should choose, etc, are available in the README file there.
Notes on Hijri conversion
Any Hijri conversion including Umm al-Qura is not used as reference for ibadah e.g. beginning of saum (fasting), Eid al-Fitr, and Eid al-Adha.
Latitude and longitude are in degrees, positive values for north and east respectively, negative values for south and west respectively. More examples are available in example directory.
DateFormat format = new SimpleDateFormat("HH:mm");
// optional: set timezone to make sure formatting is correct
// format.setTimeZone(timeZone)
Times times = new TimeCalculator()
// today
.date(new GregorianCalendar())
// latitude, longitude, altitude, timezone
.location(-6.38043079, 106.85337984, 0, +7)
// fajr and isha rule [, asr rule, time adjustment]
.method(AngleRule.EGYPT) // .method(AngleRule.EGYPT, false, TimeAdjustment.ZEROS)
.calculate();
for (Date time : times) // as java.util.Date
print(format.format(time));
// other styles
print(times.getZuhr()); // as java.util.Date
print(times.getTime(Times.ASR)); // as java.util.Date
print(times.getHms(Times.MAGHRIB)); // simply as Hms (hour-minute-second) // latitude and longitude of the user
double lat = -6.169777778, lng = 106.8307333;
print(Qibla.findDirection(lat, lng)); // as double (in degrees)
print(Qibla.findDirectionDms(lat, lng)); // as Dms (degree-minute-second) /* By Java convention, month is 0-based and day-of-month is 1-based */
// year, month, day
print(UmmQura.toGregorian(1436, 0, 1)); // as java.util.GregorianCalendar
print(UmmQura.fromGregorian(new GregorianCalendar(2015, 0, 1))); // as HijriDateWe need your dua and support
Salam and have fun!
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