I don't know whether or how you could automatically identify it as a date. When outputting dates to Excel in PHP, I store the serial date and apply a date format. I've not used the equivalent in Perl yet (edited to add: and you're doing input, not output) so can't tell you "just do this and this and Bob's your uncle." I'd be interested in knowing what you find out.

In reply to Re^5: Spreadsheet::XLSX date format problem by Bethany
in thread Spreadsheet::XLSX date format problem by Anonymous Monk

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