I was apalled to learn that IPB doesn't support international dates. The names of days and months are in the language packs and so that's not a problem.
I contacted IPB about this and they say it's not supported because the times and dates are handled by the respective PHP functions.

Well phpBB uses PHP for that too and they have international dates which work perfectly. So I am quite shocked that this is something IPB cannot do.

I hope it gets implemented in a future release.

Okay I'm confused.

Are you saying that when you go in to your Admin Control Panel > Tools and Settings > Date & Time Formats

That when you change the time format it doesn't work? Cause I've changed mine and not had issues.

As long as it's in English, it'll work.
But in phpBB it'll translate the date (weekday name and month name) into your language (if you install the right language files). IPB doesn't do this.

Now that makes more sense, thank you! :) Interesting. I'd have thought this was handled in the Language File.

You could handle this quite easily via a language file. Simply have the PHP date string as a language bit. I think this should be done in the next point release - well done for spotting this and pointing it out. :)

PHP generated dates do not use the language files:

http://forums.invisionize.com/index.php?showtopic=83455

I'm confused too, both formats and texts are displayed correctly on our norwegian forum.

Only problem I have seen is the mouseover description for the online users list, this is am/pm.