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 FileMaker Pro Custom Functions

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Timestamp_Format_RFC822 ( _timestamp ; _timezone )

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  Average rating: 4.6  (34 votes)
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Rewolfer, -

Formats valid RFC2822-timestamps as FMP-timestamps or vice versa.

Sample Input:
Timestamp_Format_RFC822 ("09/12/2002 18:12:17"; -3.5 )
Sample Output:
"Thu, 12 Sep 2002 18:12:17 -0330"

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


This function was merged with its counterpart into:
Timestamp_Format_RFC822 ()

You can find it here:

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


5 most recent comments | Show all 9 comments

Sorry to report that I am still getting the same result. I've compared the function above with what I had previously and can see the ">=" differences, so I'm sure I have the correct new code to test with.


Steve Savery, United Kingdom
March 15, 2011 9:19am

i reposted the entire code. since i had renamed the function you have to rename GET_EXPLODEDKEY to STRING_GET_EXPLODE.
if nothing helps you can download a demo-file under
tell me if you found something, please.

TS Wolf, Berlin
March 15, 2011 11:53am

I fear I may have been wasting your time. Your example file works first time, yet if I delete the earlier custom functions from my db and import yours from the supplied file it fails in my db. Yet it still works in your example db.

Could it be a limitation of hosted files? Or a conflict with other custom functions?

Steve Savery, United Kingdom
March 16, 2011 3:27am

i think i found it: i created a file with british time settings and got the same result as you.
i fixed the handling of international dates and hope the function now works in your db as well.
copy new code and post if it works.
thanks for your extensiv feedback.

TS Wolf, Berlin
March 16, 2011 4:00am

Hi, yes found the same thing. So I've changed around date_year with date_day when formatting the date from the string.

Many, many thanks for all your help. This is about to put to very good use!

Steve Savery, United Kingdom
March 16, 2011 5:16am

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