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Time offset from GMT [1] Notes; Prior until 1907 UTC+04:28:12: Karachi Time (KART) 1907–1951 UTC+05:30: Indian Standard Time (IST) 1951–1971 UTC+05:00 in West Pakistan UTC+06:00 in East Pakistan (today Bangladesh) Karachi Time (KART) Dacca Time (DACT) 1971–present UTC+05:00 in Pakistan: Pakistan Standard Time (PKT)
This is a list representing time zones by country. Countries are ranked by total number of time zones on their territory. Time zones of a country include that of dependent territories (except Antarctic claims). France, including its overseas territories, has the most time zones with 12 (13 including its claim in Antarctica and all other counties ).
Such designations can be ambiguous; for example, "CST" can mean China Standard Time (UTC+8), Cuba Standard Time (UTC−5), and (North American) Central Standard Time (UTC−6), and it is also a widely used variant of ACST (Australian Central Standard Time, UTC+9:30). Such designations predate both ISO 8601 and the internet era; in an earlier ...
In terms of time usage, both the 24-hour clock and 12-hour clock are widely used in the country. The 12-hour notation is widely used in daily life, written communication, and is used in spoken language.
Pale colours: Standard time observed all year Dark colours: Summer time observed During British Summer Time (BST), civil time in the United Kingdom is advanced one hour forward of Greenwich Mean Time (GMT), in effect changing the time zone from UTC+00:00 to UTC+01:00, so that mornings have one hour less daylight, and evenings one hour more.
On 15 September 1951, following the findings of mathematician Mahmood Anwar, two time zones were introduced. Karachi Time (KART) was introduced in West Pakistan by subtracting 30 minutes from UTC+05:30 to UTC+05:00, while Dacca Time (DACT) was introduced in East Pakistan by subtracting 30 minutes off UTC+06:30 to UTC+06:00.
Bangladesh Standard Time, the time zone of Bangladesh, at UTC+6:00; Bering Standard Time, a former timezone of Alaska, at UTC−11:00; British Summer Time, the daylight saving time zone for the United Kingdom, at UTC+1:00; Burma Standard Time, the standard time zone for Myanmar (Burma), at UTC+6:30
The Cabinet of Pakistan had chosen to do this "in order to make maximum use of daylight and to save energy." [ 1 ] In 2008, DST began on June 1, and was initially set to run through August 31 to meet the annual shortfall of 4 gigawatts of electricity rather than enforcing daily power cuts in households and factories.