Didn't find anything about when searching (date + language). It is rather minor, but thought I could report it anyway since I happened to notice it.
That sort of stuff.
This beatmap was submitted using in-game submission on dimanche 20 juillet 2008 at 18:46:41http://osu.ppy.sh/index.php?p=song&s=2172
This beatmap was submitted using in-game submission on 2008年7月20日 at 午後 6:18:43viewtopic.php?f=10&t=4617
That sort of stuff.