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Excel/date formula error


A & B
A & B  

I'm using Excel 2013 with Windows 7.

I have a series of simple formulas that are working fine, but I just noticed that one of the formulas is yielding an incorrect result.  The formulas count the number of weeks between two dates but one of the formulas is converting one of the dates into the wrong "datevalue" number.

I've looked at cell formatting and the "Evaluate Formula" function, but I'm still puzzled.

I've attached 2 screen shots of 3 formulas from my spreadsheet.  If you'd like a stripped-down version of the spreadsheet to evaluate, please let me know.

Thank you,

The values are correct. 12/15/15 IS 42353 and 1/7/2016 IS 42376.
What do you think is the problem?
Enter 12/15/15 in a cell and 1/7/2016 in another cell, then format them both as General, and you'll see the numbers 42353 and 42376.
There's no problem here.
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Bob Umlas


I`m a Microsoft Excel MVP (Most Valuable Professional) and have been since the inception of the program in 1995. I can answer every kind of Excel question except: API, Importing/exporting to other programs (powerpoint, word,...) Also check out my in-person training link at


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BA in math, Hofstra University, 1965

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