Astronomy and calendars
English Perpetual calendar December 2017
Deutsch Espanol Italiano day calendar - Calendar 2017

(for BC Years use astronomical notation)

December 2017
Fase Luna3456789
Fase Luna10111213141516
17Fase Luna181920212223
2425Fase Luna2627282930
Gregorian Calendar
Events of the month
Astronomical events
IconaDescrizioneDataOra T.U.
Full MoonFull MoonSunday 3 15:46
Last quarterLast quarterSunday 10 07:55
New MoonNew MoonMonday 18 06:28
Solstizio d´invernoThursday 21 16:28
First QuarterFirst QuarterTuesday 26 09:14
Christian Calendar
Event Day
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).


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