Astronomy and calendars
English Perpetual calendar April 2015
Deutsch Espanol Italiano day calendar - Calendar 2015



(for BC Years use astronomical notation)

April 2015
SunMonTueWedThuFriSat
123Fase Luna4
567891011
Fase Luna121314151617Fase Luna18
192021222324Fase Luna25
2627282930
Gregorian Calendar
Events of the month
Astronomical events
EventDescriptionDayUT
IconaDescrizioneDataOra T.U.
Full MoonFull MoonSaturday 4 12:04
Total Lunar EclipseTotal Lunar EclipseSaturday 4 11:59
Last quarterLast quarterSunday 12 03:49
New MoonNew MoonSaturday 18 18:56
First QuarterFirst QuarterSaturday 25 23:48
Christian Calendar
Event Day
EasterSunday 5
Easter MondayMonday 6
Times are in UT - Universal Time (Greenwich Mean Time); for lunar phases and eclipses the error in within 2 min.


This perpetual calendar works for any year since 4713AC (-4712). The date of change from Julian Calendar to Gregorian is Oct 15 1582 (Julian Oct 5 1582).
For years before 321, when Emperor Constantine I introduced by decree the week cycle and Sunday rest, you will see the Roman Calendar with Kalendae, Nonae and Idi and the nundinal cycle instead of the week. You can always see the modern style calendar selecting from the dropdown menu.
For years between 46BC (first year of the Julian Calendar) and 4AD I tried to take into account the leap year error (which the priests interposed every three years instead of four) up to 8BC when August corrected this error suppressing three leap years.
For years before 46AC (-45) this calendar uses a analeptic julian calendar which obviously is different from the calendar used by Romans at the time (Numan Calendar).


Reference

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