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Enforce a datetime format and validate it

  1. 02-22-2013, 10:42 AM #1
    MORRG
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    Enforce a datetime format and validate it

    Hi..

    I'm trying to validate that a person has a datetime in the format CCYYMMDDHHMMSS and that it is a valid date and less than today. Been messing around with IF, MID, MEDIAN etc without much success. Can it be done? even for the first 6 characters as I know there is a formula size limit - been trying to avoid macros, but if thats my only option...

    I look forward to your expert opinion...
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  2. 02-22-2013, 12:14 PM #2
    Pauleyb
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    Re: Enforce a datetime format and validate it

    How about this:
    =IFERROR(IF(LEN(A1)<>14,NA(),IF((MID(A1,5,2)&"/"&MID(A1,7,2)&"/"&LEFT(A1,4)&" "&MID(A1,9,2)&":"&MID(A1,11,2)&":"&MID(A1,13,2))+0>=TODAY(),NA(),"Valid")),"Not Valid")
    Pauley
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