Redmine

There's already %Y-%m-%d, not sure having the month name instead of number would be so much better/different, especially because I'd rather have the name rather than the number in more "human readable" formats, i.e. in stuff like %d %b %y.

Felix Schäfer: %Y-%m-%d is not a good enough format, since it is ambiguous for any dates where the day-of-month is 12 or less.

There is no way of telling from reading such a printed date, eg. 2011-01-12, if it is (in this example) january 12 or december 1.