You can change that from

Settings > General > Timezone >

Here are some examples of date format and resulting output.

  • F j, Y g:i a – November 6, 2010 12:50 am
  • F j, Y – November 6, 2010
  • F, Y – November, 2010
  • g:i a – 12:50 am
  • g:i:s a – 12:50:48 am
  • l, F jS, Y – Saturday, November 6th, 2010
  • M j, Y @ G:i – Nov 6, 2010 @ 0:50
  • Y/m/d \a\t g:i A – 2010/11/06 at 12:50 AM
  • Y/m/d \a\t g:ia – 2010/11/06 at 12:50am
  • Y/m/d g:i:s A – 2010/11/06 12:50:48 AM
  • Y/m/d – 2010/11/06