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Calculate start date from finish date minus 14 working hours

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    Calculate start date from finish date minus 14 working hours

    I needs a formula (not VBA) to calculate the required start date.
    I have to do a job of 14 working hours and this job must be finished on 05-may-2014 13:00
    My working week is from monday u/i friday and every day I work from 08:00-16:00
    At what time do I have to start the job to get it done in time.
    The formula should give this result: 01-may-2014 15:00

    I hope somebody can help me.
    Kind regards,
    Piet Bom

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    Re: Calculate start date from finish date minus 14 working hours

    Deleted post
    Last edited by AlKey; 05-07-2014 at 06:08 PM.
    If you like my answer please click on * Add Reputation
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    Re: Calculate start date from finish date minus 14 working hours

    I think this will give more than you need
    Please make the Post as solved, when you get your answer & Click * if you like my suggestion

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    Re: Calculate start date from finish date minus 14 working hours

    Thanks for your advise.
    It is about: How to Calculate Net Work Hours Between Two Dates
    But my question is to calculate a start date that lies 14 working hours before an end date
    I found this topic on mrexcel
    The formula from barry houdini comes very close, however it finds a date in the future, while it should go back in time.
    Last edited by PietBom; 05-08-2014 at 07:27 PM.

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