Updated at 8:52 a.m. ET
After creating an exclusive time zone for his country three years ago, North Korean leader Kim Jong Un has pledged to change his country's clocks so that they're back in sync with South Korea.
North Korean time, or Pyongyang time as it is called, was moved back by 30 minutes in 2015. The shift returned North Korean clocks to where they were before colonization — 8.5 hours ahead of Greenwich Mean Time. GMT is the standard time against which all other time zones in the world are set.