Brian Dunning's FileMaker Custom Functions

WeekOfMonth ( _date ; startingDay )

Returns a number between 1 and 6 representing the week containing date

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Daniele Raybaudi   Daniele Raybaudi - Show more from this author
ACI
http://www.aci.it

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  Sample input:
WeekOfMonth ( "06/07/2009" ; 1 )

WeekOfMonth ( "06/07/2009" ; 2 )
  Sample output:
2

1

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

WeekOfMonth ( _date ; startingDay ) custom function ( not recursive)

Author:
Daniele Raybaudi

Parameters:
_date - any calendar date
startingDay - any number between 1 and 7, where 1 represents Sunday

Data type returned:
number

Description:
Returns a number between 1 and 6 representing the week containing date, figured according to startingDay. startingDay indicates which day is considered the first day of the week.

 

Comments

Robert D Trammel   Robert D Trammel
Nov 3, 2023
Thanks for this function. I modified it a bit so that it only needs to take the date.
/*Data type returned:
number

Description:
Returns a number between 1 and 6 representing the week containing date, figured according to startingDay. startingDay indicates which day is considered the first day of the week.
*/

Let([
startingDay = DayOfWeek( Date( Month( _date ); 1; Year( _date ) ) );
first = Date ( Month ( _date ) ; 1 ; Year ( _date ) )
];
WeekOfYear ( _date ) - WeekOfYear ( first ) + 1 - ( DayOfWeek ( _date ) = startingDay - 1 ) + ( DayOfWeek ( first ) = startingDay - 1 )
)
 

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