Rob -

Good point. That's why I always save the time with the date. In some
work I did with a previous employer, there was only a time column
without any date (the previous programmer was a dolt). I would insert a
column and stick in a formula that incremented the time by 1 if it was
less than the first time in the column. Since most processes ran shorter
than 24 hours, this was okay.

I just finished another job in which the client didn't understand
Excel's dates and times. He'd programmed his equipment to break up the
time into three columns: Date, Time, and milliseconds. I showed him how
to use custom number formats, especially "yyyy/mm/dd hh:mm:ss.000".

- Jon
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Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
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Rob van Gelder wrote:

Just be careful when the date window covers midnight. The smaller time might
not be earlier.