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Time function

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  • Time function

    Ok I am having trouble understanding and I will need help on every step please. I need three fields start time and end time and a field that shows how many hours and minutes, this is for employees time sheet, I need to use regular time not military, I need to put in the start and the end and get how many hour and minutes were worked, can anybody help me PLEASE I have tried everything and I am starting over THANK YOU Guy

  • #2
    RE: Time function


    Attached ia a zip file with a sample table showing how to enter time as a character, convert it to seconds, calculate the seconds elapsed, and convert that back to character. Unzip the files to an empty directory. Open the database TimeTest. The table time has a couple entry fields to enter time in character, a couple calculated fields that use toseconds() to convert to seconds, and a field to convert the differnce back to time using totime(). This should give you a good idea how to get what you want.



    • #3
      RE: Time function

      Thank you very much, everything was going well until I put in a start time of 9:20 am and end time of 11:15PM and the result was 1 hour and 55 min when it should have given me 13 hours and 55 min, any ideas Guy


      • #4
        RE: Time function

        I would suggest Military time.



        • #5
          RE: Time function

          Thank You for trying you have been alot of help Guy


          • #6
            RE: Time function


            Small error in the calculated fields

            TOSECONDS(START+" "+S_AM_PM)

            Should be


            Change the other calculation in the same way. Incidentally, if a user puts in a time of "10: " it will evaluate incorrectly. It could probably use a validation rule to verify that the entry is a good time. I will take a look later and see what will eork.



            • #7
              RE: Time function


              In addition to the previous responses, also look at my
              Time_Difference contribution in the code archive:
              Melvin Davidson 01-16-2002 11:54 AM

              Melvin Davidson


              • #8
                RE: Time function

                Hey Jerry that did the trick, you have been a great help to me thank you for taking the time, now I am calling on you again I noticed that when a employee works for more than 13 hours and 59 minutes than the program does not work for example I put in 09:20 am to 02:30 am it will give me a negetive number such as -8:10, again Jerry Thanks for everything, I am learning how to do some of this stuff, Guy


                • #9
                  RE: Time function


                  You certainly have some dedicated employees to deal with. Actually a more common situation would be a night shift person starting in one day and ending in the next. A normal way to handle this would be to also keep track of the starting and ending date. If they are the same, then the formulas in the sample work. If they aren't, then you would have to find the number of seconds in the first day (86400 seconds in a full day)


                  Add the seconds in the last day


                  and add any full days in between, 86400 seconds per day. If no one will work more than 24 hours continuously, then you can skip keeping track of the date, since the ending time in the next day will always be less than the start. Therefore, this will work for the elapsed time calc.


                  Same day start stop = END_SEC-START_SEC>=0
                  result = END_SEC-START_SEC

                  Otherwise start one day stop next
                  result = (86400-START_SEC)+END_SEC



                  • #10
                    Re: Time function

                    Hi Jerry.

                    I am also having the same issue with time difference but I didn't see your attachment can you repost. I would really appreciate it.