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Calendars > Calendrical Systems v
Observational Astronomy > Moon Phases and Cycles v



Epact
    

One less that the number of days since New Moon on January 1 in the Gregorian calendar. Let G be the golden number of a given year, then


Golden Number




References

Tøndering, C. "Frequently Asked Questions about Calendars." http://www.tondering.dk/claus/calendar.html.



© 1996-2007 Eric W. Weisstein





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