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FileMaker Pro Custom Functions

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Weekdays ( StartDate ; EndDate )

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Average rating: 3.6 (8 votes)
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John Fitch, Database Solutions
www.briandunning.com

Weekdays between start date and end date.

Sample Input:

Weekdays ( StartDate , EndDate )

Sample Output:

261

( EndDate + 1 - StartDate ) - Int (( EndDate + 1 - StartDate)/7) * 2 - Case ( Mod (EndDate + 1 - StartDate ; 7) = 0 or DayName ( StartDate ) = "Monday" and Mod (EndDate + 1 - StartDate ; 7) < 6 or DayName ( StartDate ) = "Tuesday" and Mod (EndDate + 1 - StartDate ; 7) < 5 or DayName ( StartDate ) = "Wednesday" and Mod (EndDate + 1 - StartDate ; 7) < 4 or DayName ( StartDate ) = "Thursday" and Mod (EndDate + 1 - StartDate ; 7) < 3 or DayName ( StartDate ) = "Friday" and Mod (EndDate + 1 - StartDate ; 7) < 2 ; 0 ; DayName ( StartDate ) = "Sunday" or DayName ( StartDate ) = "Monday" and Mod (EndDate + 1 - StartDate ; 7) = 6 or DayName ( StartDate ) = "Tuesday" and Mod (EndDate + 1 - StartDate ; 7) = 5 or DayName ( StartDate ) = "Wednesday" and Mod (EndDate + 1 - StartDate ; 7) = 4 or DayName ( StartDate ) = "Thursday" and Mod (EndDate + 1 - StartDate ; 7) = 3 or DayName ( StartDate ) = "Friday" and Mod (EndDate + 1 - StartDate ; 7) = 2 or DayName ( StartDate ) = "Saturday" and Mod (EndDate + 1 - StartDate ; 7) = 1 ; 1 ; 2 )
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

Description:

Gives the number of weekdays between a start and end date. I've been using this equation since 1995 and it has always been correct.

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

This is my Custom Function and I want to edit it

Discuss:

Thanks

Hugh, Rapid City, SD
September 28, 2010 9:12am

I've been using this equation to determine weekdays between a start date and an end date since 1995 and it has never failed me. I write activity based accounting software. This is the custom function version of the equation.

John Fitch, Edmond
September 28, 2010 9:55am

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

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