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 FileMaker Pro Custom Functions

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  Average rating: 4.5  (28 votes)
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Darrin Morton, Neocode Software

finds date of Monday in week of any given date

Sample Input:
Sample Output:

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Finds the date of the Monday in the week of any given date. Always assumes by convention that Sunday is the first day of the week. (day 1)

input - ( DayOfWeek ( input ) ) + 2

Note: these functions are not guaranteed or supported by Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it


What about:

input - DayOfWeek ( input ) + 2

Daniele Raybaudi, Rome
August 02, 2013 2:01pm

thank you daniele, you were right, your suggestion needed a minor tweak that incorporated, works great

Darrin Morton, Victoria, BC
August 02, 2013 2:31pm

It works even without the added parentheses

Daniele Raybaudi, Rome
August 03, 2013 2:31am

This doesn't give a correct result if the day of the week input is a Sunday. It returns the Monday after, not the Monday before.

If you alter the function to this:
input - DayOfWeek ( input -1 ) + 1
then it gives the previous Monday when a Sunday is specified.

It may be that some people want to calculate it as Darrin specifies, but I was caught out by the Sunday date so thought it best recorded here. Thanks for a useful function though


Brian Rich, Hampshire, UK
June 23, 2014 8:35am

Make a comment about this Custom Function (please try to keep it brief & to the point). Anyone can post:

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Answer 9 + 3 =
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