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Given an end date find corresponding start date 3 months prior ..quarter date range

  1. #1
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    Given an end date find corresponding start date 3 months prior ..quarter date range

    hi,

    I am trying to find / determine a start date based on an end date. The end date is always the end of a given month.

    Then what i want to do is go back 3 months to the begining of the 3rd month (see below):

    Start : End
    9/1/11 : 11/30/11
    8/1/11 : 10/31/11
    7/1/11 : 9/30/11
    6/1/11 : 8/31/11


    So you would be given the end date above and need to figure outthe corresponding start date............

    Anyone have any ideas?
    Last edited by welchs101; 01-04-2012 at 10:27 AM.

  2. #2
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    Re: Given an end date find corresponding start date 3 months prior ..quarter date ran

    Hi there,

    If your end date is in B1, try:

    =EOMONTH(B1,-3)+1

    HTH,

    Fermented R

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    Re: Given an end date find corresponding start date 3 months prior ..quarter date ran

    Or, without the analysis toolpak, or XL2007

    =DATE(YEAR(A1),MONTH(A1)-2,1)
    Rule 1: Never merge cells
    Rule 2: See rule 1

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