When is leap year 2011

Leap Year. Enter a year:. Read more Contact Privacy Policy. Leap Year Calculator Please fill in a year number Examples: , , , How to Know if Certain Year is a Leap Year The 3 conditions for a given year be a leap year are: The year is exactly divisible by four with no reminder ; If the year is divisible by years ending in two zeros , it is not a leap, except if It is also divisible by in this case it will be a leap year.

Examples: Was a leap year? Therefore, it could be a leap year. So, we conclude that was a leap year. Better, but not perfect. And ignoring variance in the solar year. The following rule, devised recently by British maths brainiac Adam P Goucher, is much cleverer: years divisible by are not a leap year, otherwise years divisible by four are a leap year. The rule only shifts the calendar by about 0.

That's called forward planning. Explanatory Supplement to the Astronomical Almanac. Starr, A. Strohsacker, J. Vardi, I.