Excel format handling is (to me) a twisty maze of passages. There's a map of format codes to default formats, which can change depending on locale (see the various Spreadsheet::ParseExcel::Fmt* libraries in the distribution). You may need to debug to see where things go off. As a workaround, you can use the ExcelFmt() function from Spreadsheet::ParseExcel::Utility in the distribution to format these cells (feeding it the value from calling the cell's unformatted() method rather than value()). You can also try posting the issue with the problem spreadsheet at the bug tracker (as indicated in the distribution). The maintainer may get around to looking at it.

In reply to Re^2: Excel to CSV datetime conversion- format changes by runrig
in thread Excel to CSV datetime conversion- format changes by Anonymous Monk

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