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OT Calculation: Calculate hours shared by two intervals|General Excel Questions & Answers|Excel Forum|My Online Training Hub

You are here: Home / OT Calculation: Calculate hours shared by two intervals|General Excel Questions & Answers|Excel Forum|My Online Training Hub
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sp_CrumbsHome HomeExcel ForumGeneral Excel Questions & Answe…OT Calculation: Calculate hours sha…
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OT Calculation: Calculate hours shared by two intervals
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DMurray3

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August 15, 2017 - 12:31 pm
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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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SunnyKow
Puchong, Malaysia

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August 16, 2017 - 4:49 pm
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Hi Daniel

The formula is quite long but you can give it a try.

I have modified your formula in column H as I need to get the fraction portion of the time else the formula will not work.

Hope this helps.

Sunny

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DMurray3

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August 18, 2017 - 2:14 pm
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Many ThanksSunnyKow...

I will run your recommended formulae against some real data, just to confirm it doesn't break down the line.

Will revert any findings.

In appreciation,

Daniel Murray

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