Brian Dunning's FileMaker Custom Functions

Easter ( myDate )

Show when Easter falls in the calendar year for any given date.

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Mike Duncan   Mike Duncan
Duncan Creations

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  Sample input:
Easter ( fields::date )
  Sample output:

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

A custom function for figuring when Easter falls in any given year, is based on the algorithm of Oudin (1940). More information can be found about the calculation at <>. In fact, the custom function used in this example was copied from that page with little modification.

I created an additional custom function:
floor.math (num)
Floor ( num )

In order to copy/paste in code with little modification. This really shows the power of the Let function.



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

Under construction. Email me your wish list for improvements.