Revised Julian calendar

The Revised Julian calendar is a variation of the Julian calendar. It is mainly used by Eastern Orthodox churches. Some Eastern Orthodox churches introduced it in 1923.

Leap years

If the year number can be divided by four without rest, the year is a leap year (same as Julian calendar and Gregorian calendar).
If the year can be divided by 100, it is not a leap year (same as Gregorian calendar).
If dividing the year by 900 leaves a remainder of 200 or 600, the year is a leap year.

Until the year 2800, this calendar will be in sync with the Gregorian calendar; From 2800 to 2900, the Gregorian calendar will be 1 day off.

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