>>Thanks, Ed. I'd forgotten the rest. The exceptions are that the year is evenly divisible by 400. 1600 was so long ago, I couldn't remember whether or not it was :-).
>Don't feel bad George! Actually it wasn't. Leap years didn't exist until 1752.I think I remember we had about 10 leap days that year- In October, no less.

Oh, no, here we go again :) Actually 1600 was technically a leap year (made so by Pope Gregory in 1582). However, I believe most of Europe didn't observe the Gregorian calendar until 1752...