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Convert Julian Date/Time (ddd.tttttt) to Calendar Date/Time

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    Convert Julian Date/Time (ddd.tttttt) to Calendar Date/Time

    I need some help with a quick way to convert Julian Date/Time in format ddd.tttttt, to two separate columns. One column should be Calendar Date mm/dd/yyyy and the other time hh:mm:ss. An example:


    341.872917 to be converted to 12/06/2009 20:57:00


    I'm stumped, any ideas?

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    Re: Convert Julian Date/Time (ddd.tttttt) to Calendar Date/Time

    I found this on the MS knowledge base:

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    See the article at http://support.microsoft.com/kb/214099/en-us. The code is approx halfway down the page.

    EDIT: The result given by this formula doesn't match your example answer
    Last edited by deadlyduck; 08-12-2009 at 07:58 PM.
    Excel 365 user. To unblock a downloaded macro-enabled workbook, go to your "Downloads" folder > right click on the workbook name > click 'Properties' > check the 'Unblock' checkbox. You can now open the workbook.

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    Re: Convert Julian Date/Time (ddd.tttttt) to Calendar Date/Time

    I've used the above code before but my data has a different format that won't work with it. ie...no year in the data itself

    still causing issues...

  4. #4
    Forum Expert shg's Avatar
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    Re: Convert Julian Date/Time (ddd.tttttt) to Calendar Date/Time

    Assuming your example is correct, ="12/30/08" + A1 and format as you like.
    Entia non sunt multiplicanda sine necessitate

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