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 FileMaker Pro Custom Functions

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DayWeekYear2Date ( dayNR ; weekNR ; yearNR )

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  Average rating: 3.8  (49 votes)
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Arjen van der Ree, Maxperts

Turns DayNr. WeekNr. & Year into a Date

Sample Input:
DayWeekYear2Date ( 2 , 27 , 2012 )
Sample Output:

 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed


In many overviews (calendars e.g.) users want to use week numbers & years to see a set of days (mon - fri). This function makes is easy to translate from week-numbers, years and day-numbers (2=monday ... 6 = friday) to calculate say 5 dates to relate to records/portals in a week view.
I couldn't find anything like this on the internet and it took quite some time and testing to get is to work properly.
[dayNR ; 2 .. 5 (mon - fri) ]
[weekNR ; 1 ... 53*
[yearNR ; any year that Filemaker supports ]

*week-number 53 will goto wk 1 the following year in most cases.

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


Couldn't this be simpler? See:

comment, VR
December 25, 2011 6:42pm

I'm not happy with the declaration of script variables ($...) in this function. They should remain local/private within the Let statement of this CF. One way to mark them as private is to use '~' or '@' (in fact anything different from '$' or '$$') instead of the '$' prefix used here.

Peter Bouma, Amsterdam
March 18, 2016 4:35pm

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