Assuming you want to change the display format of the dates. The date formats on the Server are not controlled by MSP settings. They are controlled by the regional settings.
To change the date format, navigate to the Gear icon >> Site Settings >> Regional Settings, and change the "Locale" to the region applicable to you.
Prasanna Adavi,PMP,MCTS,MCITP,MCT TWitter: @prasannaadavi Blog: http://www.prasannaadavi.com