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How to: Format Dates as U.S. Dates Regardless of Regional Settings

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When you use Visual Basic for Applications (VBA) to concatenate dates into an SQL string, you must use a standard U.S. date format, regardless of the region that you have set in the Regional Settings tool in Control Panel. This topic contains a custom function that will convert any date into a U.S. date format.

Function MakeUSDate(DateIn As Variant) As String 
 
 ' Do nothing if the value is not a date. 
 If Not IsDate(DateIn) Then Exit Function 
 
 ' Convert the date to a U.S. Date format. 
 MakeUSDate = "#" & Month(DateIn) & "/" & Day(DateIn) & "/" & Year(DateIn) & "#" 
End Function