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NextFirstFriday ( theDate )

Finds the next first Friday

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Sean - Show more from this author Private

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

Let ( [ $Month = Month ( theDate ) ; $Month = If ( $Month = 12; 1; $Month + 1 ) ; $Day = 1 ; $Year = If ( $Month = 1 ; Year ( theDate ) + 1 ; Year ( theDate ) ) ; $Date = Date ( $Month ; $Day ; $Year ) ]; Case ( DayOfWeek ( $Date ) = 6 ; $Date ; DayOfWeek ( $Date ) = 7 ; $Date - DayOfWeek ( $Date ) + 13; $Date - DayOfWeek ( $Date ) + 6 ) ) Click to copy

Enter a date and the function finds the following month's first Friday.

 

Comments

		unix, Japan Sep 27, 2013
Let ( [ Next1stDate = Date ( Month ( theDate ) + 1 ; 1 ; Year ( theDate ) ) ; Dow = DayOfWeek ( Next1stDate ) ]; Next1stDate + 6 - Mod ( Dow ; 7 ) )

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