Programming Reference Manual
 
Syntax
 
IsDate(expr)
 
Description
Return the True if expr is a valid date.
 
Parameter
Description
expr 
A variant expression to test for a valid date.
See Also
Example
 
Sub Main
Dim X As Variant
X = 1
Debug.Print IsDate(X) 'False
X = Now
Debug.Print IsDate(X) 'True
End Sub