hi Olivier.

Like I said, the datepicker in event creation page, is not in our main language file but I already raised an bug report and hopefully our developers will fix it asap. However when I translate strings which I mentioned before on my test site, then it's translated as it should be(please take a look on the screenshot), this's why I asked for your FTP so I could check why you can't translate it on your site, so to check the fault of this issue I need to access your ftp. And just to make sure, site info box in your first post is viewable only by moderators, so if you'll add your ftp access there, then only support team will be able to see it.

awesomescreenshot.com/0322wiz64e

Hi Oliver,

This issue has been fixed and is in the latest release of Jomsocial