How can I set the date format to my country setting?
If you want to change the time format to German , you must install the German language from the Language Support and then set the "Regional Settings" in German
If you want to change the format in Date and Time , you must install dconf-tool . From terminal do
sudo apt-get install dconf-tools
Find it through Dash by writing dconf open it and goto Com > Canonical > Indicator > Datetime and from there you can change the format.
Logout and Login for changes to take effect.
The default format is %l:%M %p
, you will change it to %M:%l %p