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Excel/Conditional Formatting


I am trying to make a schedule with time intervals and to see how they correspond. For example:

Joey works from 10 AM - 5 PM
Olive works from 3 PM - 9 PM

So I would like to fill out a chart:

(Would the start and end time need to be in two columns?)

Joey:   1000 - 1700
Olive:  1500 - 2100

This information will then highlight a certain range of cells for their available time during the day:
 A      B         C
      Joey  |  Olivia
9:00         |
9:15         |
9:30         |
9:45         |
10:00 HILITE |
10:15 HILITE |
10:30 HILITE |
5:15         | HILITE
---         | HILITE
8:45         | HILITE
9:00         | HILITE

With this I will be able to see where my coverage overlaps.

I really appreciate your time on this matter.


I would say start and end need to be in separate cells.  Then you can write formulas to compare against the start and end (using conditional formatting).

If you want specific help, I would need to see the workbook.  If so, you can send it to

If it isn't self evident what you want, then tell me what is what in the workbook.

Tom Ogilvy

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Tom Ogilvy


Selected as an Excel MVP by Microsoft since 1999. Answering Excel questions in Allexperts since its inception in 2001. Able to answer questions on almost all aspects of Excel's internal capabilities. If seeking a VBA solution, please specify that in your question itself so I give you the answer you want. [Excel has weak protection - if you are distributing an application, I don't answer questions on how to protect your project from your users.]


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Master of Science (MS) degree Operations Research (ORSA)

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Microsoft MVP in Excel.

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