
Active Member

August 12, 2017

Hi all,
I am have trouble calculating the number of hours shared by two intervals, specifically when the 'period of interest' crosses the day boundry.
The main formula I have been working with is:
IF(start<end; MIN(end; upper)-MAX(start; lower); MAX(0;upper-start)+MAX(0;end-lower))
where: WorkShift begins = start; Workshift finishes = end; Period of Interest Begins: lower; Period of Interest Finishes: upper
The above formula DOES consider when the Workshift cross the day boundry, but fails when both Workshift and Period of Interest.
An important issue is that, I am not using dates+times, but rather only 'times', and would prefer to keep working that way, even though it may prove to be tougher...
Enclosed my sample case which expands the definitions and details I am working with, and trust that you can provide guidance as to how to solve my problem.
Many thanks in advance for your time and feedback.
Kind regards, DMurray3
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