Subtracting Times producing negative numbers

doug.sloane

New Member
Joined
Jun 18, 2002
Messages
13
I have 2 columns with times in them in a HH:MM format.I'm trying to subtract them from each other but when the column I'm subtracting is greater than the column being subtracted form I get garbage as the result. I can understand why negative time is a problem in a quantum physics sense (or maybe not) but why is it a problem to show a negative HH:MM ???? I could do it with a big long macro / formula with mod 60 for minutes and mod 24 for hours but don't want to. Is there an easier way ?
 

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Round to nearest half hour?
Use =MROUND(A2,"0:30") to round to nearest half hour. Use =CEILING(A2,"0:30") to round to next half hour.
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