>Hello All,
>A simple question but one I have gone completelty blank on.
>
>How do I define a leap year?? I know that year % 4 returning a 0 is not enough. What's the rest??
>
>Thanks

Here's a quick and dirty function for determining leap years:

Function LeapYear
* dCheck_date is some date in the year you wish to check
Parameters dCheck_date
local nYear
m.nYear = STR(YEAR(m.dCheck_date),4)
return !empty(CTOD("02/29/"+m.nYear))