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 FileMaker Pro Custom Functions

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DayLightSavings ( TargetDate ; TargetTime; Hours )

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Tim Brown, Antidote Solutions

Day Light Saving Time

Sample Input:
DayLightSavings ( 11/2/2008 ; 7:00 AM ; -24 )
Sample Output:
11/1/2008 6:00 AM

should daylight savings occur during the -24 hour period, it will adj the output time by an hour.

 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed


This is used in a medical situation where the number of hours between an event and a procedure is critical.

Take in consideration Day Light Savings Time if you need to calculate the correct time. This calculation only considers an overlap of 1 day light savings time.

You can enter hours as negative or positive

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

This is my Custom Function and I want to edit it


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