My company's instance of Jira uses a default formatting of dd.MM.yyyy which is expected in Europe (found this under Cog-> System -> User Interface -> Look and Feel). This is also the format that I would want, but for some reason when I see dates (like when booking work time on tickets) I get the US formatting MM/dd/yyyy which I do not want.
There doesn't seem to be, or I cannot find a specific user based preference to change to bring me in line with the company default settings. It would be nice if this were a user preference and not hide it under tons of different configuration options. It's so annoying.