Time and Calendars

Which Years Are Leap Years past and Future
A leap year occurs every four years. The most recent leap year took place in 2012. A leap year will add an extra day to...
Sidereal Month?
The sidereal month is the lengthy of time it takes the moon to complete a revolution around the earth. Since the earth...
Calendar for past Dates
There are times that come up where you need an old calendar. You search your home, but you can't find one because you cleaned...
Calendar for past Years
Calendar for past years are found online. There are several websites available that can help you find any date you want...
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