Configures how dates are formatted. This is directly passed to the strftime PHP function. Some people may prefer to set it to %d.%m.%Y %H:%M.
%Y/%m/%d %H:%M
There is one exception which doesn't follow the formatting rules of strftime: You can use %f to show a fuzzy date (i.e. ”%Y/%m/%d %H:%M (%f)” produces dates like this: “2009/09/16 10:36 (3 weeks ago)”.