The easiest way would be to just install Spreadsheet::ParseExcel::Utility and use its LocaltimeExcel() and ExcelLocaltime functions together with Time::Local to convert between epoch times and Excel times.

If you really, really cannot install modules, you can just copy the relevant code out of the module and use it in your code.

I recommend to try to get that module installed.

In reply to Re: Using Excel timestamp with perl by Corion
in thread Using Excel timestamp with perl by Varkh

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