>Hi,
> How could I check for it personally?
> I am trying to get the days of week of 1/1/2000, it is right. Again, i was having calculation for date beyond 2000 year, it return true result too. The test above running on VFP3.

Basically, Fox apps are compliant as long as you use SET CENTURY ON, i.e. 4-digit date entry. However, you may check few more minor things. It's really helpful to read articles at URL I gave you.