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 FileMaker Pro Custom Functions

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UTCOffset

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  Average rating: 3.7  (47 votes)
  Discuss this Custom Function

Jeremy Bante,
https://github.com/jbante/

Returns the offset from UTC of the current device clock

Sample Input:
// Called from U.S. EST (New York) time zone

List (
GetUTCOffset;
Get ( CurrentTimestamp );
GetAsTimestamp ( Get ( UTCmSecs ) / 1000 + GetUTCOffset )
)
Sample Output:
-14400
05-18-2012 17:04:31
05-18-2012 17:04:31.062


 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

Description:

Returns the offset from UTC of the current device clock, in seconds. This can be used for establishing the time zone a device is operating in.

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

This is my Custom Function and I want to edit it

Discuss:

5 most recent comments | Show all 6 comments

Sounds reasonable enough. Done!

Jeremy, USA
April 03, 2014 6:17am

Not sure if I'm doing something wrong here… I'm getting results that are seemingly 1 hour off. I'm in Central Standard Time (CST).

Get(CurrentTimestamp) = 10/13/2015 9:00:00 PM
UTC Timestamp = 10/14/2015 3:00:00 AM
Difference = 6 hours

But, when I apply the UTCOffset CF to the UTC timestamp, it brings it back to 10 PM, which is only 5 hours difference. Is there a daylight savings issue going on or something?

Matt Larson, Cimbura.com
October 13, 2015 7:01pm

Nevermind… I was looking at a map that told me to subtract 6 hours when apparently the correct UTC is 5 hours for me. Daylight savings issue or something. Your custom function is working correctly, and perfectly for me, now that I solved my root problem!

Matt Larson, Cimbura.com
October 16, 2015 1:08pm

Anybody located East of UTC will not get the difference in seconds, but the Timestamp of that difference.

Change the formula to:
GetAsNumber ( Get ( CurrentTimestamp ) ) - Floor ( Get ( CurrentTimeUTCMilliseconds ) / 1000 )

manda, Slovenia
May 29, 2017 9:22pm

The point of the function is not that it's result is a number or a timestamp, but that the result of adding and subtracting it with a timestamp results in a meaningful timestamp. I don't care if UTCOffset is a number or timestamp as long as Timestamp ( ... ) ± UTCOffset is a timestamp in typical use.

Jeremy, Earth
May 30, 2017 11:41am

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