Have you tried using data validation and requiring dates to be entered?
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HTH,

Barb Reinhardt



"DocBrown" wrote:

I have a column set to date format. The cells seem to accept invalid date
formats such as '01/01//2009'. The data is not converted to a date value.
Other date entries are modified. For example if you enter 01/02, Excel will
convert that to 1/1/2009.

What's a method to reject invalid dates such as above or 02/30/2009.