Shop 4 Calendars
Days in a Month
Give a Calendar
Julian & Gregorian Calendars
Names of Days
Names of Months
Most months have 30 or 31 days, with the exception being February. February has 28 days in most years, but 29 days in leap years.
In the modern Gregorian calendar used today, a year is a leap year if it is evenly divisible by 4, but not evenly divisible by 100, except when it is divisible by 400. So, for example, 1896 was a leap year (divisible by 4), 1900 was not a leap year (divisible by 100), and 2000 was a leap year (divisible by 400).
Why is this?
The reason is actually quite simple:
The errors with the Gregorian calendar are quite small, but even so it will gain 1 day (as compared to the temporal or solar year) every 3,226 years - so eventually we will have to have an extra leap day if we want the calendar year to remained synchronized with the calendar year!
There are many traditions associated with leap years and the leap day (February 29th), many associated with marriage or marriage proposals:
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