It's official: Microsoft is exactly four hundred and twenty-five years behind the times. It's not just Excel and Exchange that ignore the Gregorian calendar. The Reg has also confirmed that SQL Server 2008, Windows Small Business Server, and Windows Mobile are ignorant as well.
In the wake of our story about Exchange 2007 failing to realize that February 29 is a real day, one astute Reg reader pointed out that Microsoft has no excuse for allowing its software to behave this way. "The rules of the Gregorian calendar aren't really that difficult to grasp," said someone called MacroRodent. "They are not trade secrets. And they have been available for centuries."