About Time: How Pakistan changed its time with its identity
Theoretically, the world should be divided into 24 equal time zones, in which each zone differs from the last by one hour. But as the years have passed, the world has turned into a much more complicated place.
Time zones are now much more irregular and sometimes seem positively eccentric, affected as they are by political, geographical and social changes in the real world.
Add to that arguments over daylight saving, and you have a subject that has been the cause of furious debate around the world.
Pakistan changed its time zone in the 1950s, partly to be distinctive from its bitter rival India.
But as Shoaib Hasan found out, the country's time zone is not that relevant to many Pakistanis.
23 Mar 2011