Due date cannot be a weekend


New Member
Aug 6, 2010

I'm sorry at how silly this question may sound to most of you but I am racking my brain try to figure this out. I am creating a formula that will calculate due dates from a specific start/end date. For example:

If the item was received on August 1, 2010, this task needs to be completed by within ten days. However, the tenth day cannot be a weekend. If if is, then the task should be completed the Friday before.

IE: Initial Assigment received June 24, 2010 (A4)
Acknowledgment letter must be sent within 10 days

=A4+10 results are Sunday July 4, 2010. I need it to say July 2, 2010

By the same token, I also need to be able to subtract to the nearest weekday. For example if the start date of a project is November 1, 2010, certain tasks must be completed 15 days before. But this date cannot be a weekend, it must be the Friday before the weekend day it falls on.

IE: Project Start Date is 11/1/10 (C4)
Letters must be sent 15 days before start date.
=C4-15 results are Sunday October 17, 2010.
I need the results to return Friday, October 15, 2010


Any help would be greatly appreciated.

Thanks again.

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MrExcel MVP
May 28, 2002

where {rslt} is the resulting date without the weekend adjustment.


New Member
Aug 6, 2010
Thanks for the response. Would I begin by inserting =A4+10 and then add your formula?

ie: =A4+10={rslt}-max(0,weekday({rslt},2)-5

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