NextDayNameDate ( theDate ; theDayName )

returns the date with the first occurrence of theDayName from the given theDate

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

Sample input:

NextDayNameDate ( theDate; "Monday" )

Sample output:

09/26/2005
if theDate is 09/25/2005

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

/*
NextDayNameDate() custom function

Author:
Daniele Raybaudi

Format:
NextDayNameDate ( theDate ; theDayName )

Parameters:
theDate = the start date (date)
theDayName = the dayName (text)

Purpose:
returns the date with the first occurrence of theDayName from the given theDate;
if the given theDayName is the name of the day of the given theDate, it returns theDate.
So, if we wish to know what is the date of the next Monday from theDate 09/26/2005 we can write:
Case(
theDate = "";"";
NextDayNameDate ( theDate; "Monday" ) = theDate ; NextDayNameDate ( theDay; "Monday" ) + 7;
NextDayNameDate ( theDay; "Monday" )
)
and it returns: 10/03/2005

*/
 
Let([
nextDay =  theDate  + 1 
];
Case(
theDayName  ≠   DayName ( theDate ) ; NextDayNameDate ( nextDay ; theDayName ) ;
theDate
)
)

returns the date with the first occurrence of theDayName from the given theDate;
if the given theDayName is the name of the day of the given theDate, it returns theDate.
So, if we wish to know what is the date of the next Monday from theDate 09/26/2005 we can write:
Case(
theDate = "";"";
NextDayNameDate ( theDate; "Monday" ) = theDate ; NextDayNameDate ( theDay; "Monday" ) + 7;
NextDayNameDate ( theDay; "Monday" )
)
and it returns: 10/03/2005

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

NextDayNameDate ( theDate ; theDayName )

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