So, 1,229,666,400 is the number of seconds since January 1st, 1970?

David Biddulph wrote:
=A1/(24*60*60)+DATE(1970,1,1)
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David Biddulph

mecca wrote:
I import a date from another program which converts the date from
12/19/2008 to 1,229,666,400. How do I get excel to convert it back?