...or more specifically, politics are why Casio can't build "world time" devices that will be accurate for years to come: North Korea's new time zone to break from 'imperialism' - BBC News
"North Korea is to switch to a new time zone to mark its liberation from the Japanese at the end of World War Two, says state media.
North Korea is currently in the same time zone as South Korea and Japan, which are nine hours ahead of GMT.
But Pyongyang Time will see the clocks put back by 30 minutes on 15 August.
State news agency KCNA said 'wicked Japanese imperialists' had 'deprived Korea of even its standard time' by changing the clocks during occupation.
The entire Korean peninsula - then one country - was 8.5 hours ahead of GMT until Japan colonised it in 1910.
There is no international body that approves a country's change of time zone as countries decide for themselves. In 2011, Samoa changed its time zone to the other side of the international dateline, losing one day, so as to make communication easier with neighbours Australia and New Zealand.
And North Korea is not the only country that has created its own unique time zone.
In 2007, Venezuela decided to turn its clocks back by half an hour as President Hugo Chavez wanted to have a 'more fair distribution of the sunrise' to residents.
Venezuela is now the only country with a time zone 4.5 hours behind GMT."
While I don't know of any Casio products that offer Pyongyang as a "home city," that news makes me wonder if South Korea will decide to return to their old time zone as well. If they do, THAT would make a lot of our watches "wrong" in the future.
Think about this the next time DST rolls around and people here start complaining about having to manually adjust their watches' "world time" settings. Politics is also just one of the reasons why most of us will NEVER see one global time zone or the end of DST.