invalid time

  1. WildBurrow

    24 Hour Time/Date Formatting Loophole

    I'm using a custom cell format in two cells (mm/dd/yy hh:mm). These cells are used to calculate elapsed time. Users are instructed to input 24-hour time (e.g. 1:00 PM is 13:00); however, they are managing to bypass my attempts to prevent the document from being saved with an invalid date...

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