Newest functions Upload a function Leave a tip My account

There are 2,572 functions in this library.

LastDayInstance ( theDate ; NameOfDay )

Returns the last instance of a given day in the month of the date

  Average rating: 4.6 (30 votes) Log in to vote

Andrew Sasaki - Show more from this author

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

Let ( [ LastDay = Case ( Month ( TheDate ) = 2; If (Mod ( Year ( TheDate ); 4) = 0; 29; 28); Month ( TheDate ) = 4; 30; Month ( TheDate ) = 6; 30; Month (TheDate ) = 9; 30; Month ( TheDate ) = 11; 30; 31); MonthEndDate = Date ( Month ( TheDate); LastDay ; Year ( TheDate )); MonthEndDayOfWeek = DayOfWeek ( MonthEndDate ) ; TargetDay = Case ( NameOfDay = "Sunday"; 1; NameOfDay = "Monday"; 2; NameOfDay = "Tuesday"; 3; NameOfDay = "Wednesday"; 4; NameOfDay = "Thursday"; 5; NameOfDay = "Friday"; 6; 7); DaysDifference = If (TargetDay <= MonthEndDayOfWeek; TargetDay - MonthEndDayOfWeek; (TargetDay - MonthEndDayOfWeek) - 7)] ; Date ( Month ( TheDate); LastDay + DaysDifference ; Year ( TheDate )) ) Click to copy

Given a date and the name of a day, the function returns the last instance of that day in the month -- i.e., the last Thursday of October.

 

Comments

Log in to post comments.

 

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

Support this website.

This library has been a free commmunity resource for FileMaker users and developers for 21 years. It receives no funding and has no advertisements. If it has helped you out, I'd really appreciate it if you could contribute whatever you think it's worth: