I am trying to get a function that will add time in the format of
hours:minutes. Each cell is the difference between actual time and forecast
time. Therefore sometimes I have a negative value. I cannot add the values if
I have a negative time cell.
example:
C1 is the difference between A1 and B1, lets say it equals :40 (40 minutes)
C2 is the difference between A2 and B2, lets say it equals :37 (37 minutes
C3 is the difference between A3 and B3, lets say it equals -:07 (7 minutes
under forecast)
The totals for column C should equal 1:10 (1 hour 10 minutes) but it doesn't
allow a negative time value.
Any ideas how I can make this work and how I should format the cells????
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