Was the year 600 a leap year?

Answer 1

600 is not a leap year according to the rules of the Gregorian calendar (it is evenly divisible by 100 but not evenly divisible by 400). However, it was a leap year under the Julian calendar. And unfortunately, the powers that be seem to like to keep dates before October 15, 1582 according to the Julian calendar instead of converting them to their Gregorian equivalents.

Answer 2

Yes. All the years that are a multiple of 4 are leap years.