![]() ![]() Nevertheless, many people still use GMT as the time standard for all countries worldwide - for example, GMT+12:00 for New Zealand.īut there's also another important formalism - the International Date Line (IDL). ![]() UTC is precisely the same imaginary line defined by GMT at the Prime Meridian, located in the Royal Observatory in Greenwich. It replaced the Greenwich Mean Time (GMT) in the late 1960s, even though GMT remains today as a regional time zone at UTC+00:00. The official time standard regulating the world's time and clocks is called Coordinated Universal Time (UTC). The Differences Between GMT, UTC, and IDL Take a look at the official world time zone map. So, we all end up getting 24 standard time zones and 14 additional exceptions.Īs a result, local time always depends on what time zone you're in at a given moment.Īs stated above, all nations have specific interests, so the time zone map is not as linear as it should be in theory. With the rotation of the Earth, from east to west, each meridian represents one given hour. They're technically named meridians, i.e., imaginary lines that run vertically from the North Pole to the South Pole, each 15 degrees apart. However, in a world with borders, political, geographical, social interests, and lobbies, the officially established time zones make the planet look like a complicated geometrical drawing of longitudinal lines. Ideally, the planet would be divided between 24 identical time zones, each representing one hour of the day. When you fly between Los Angeles and New York, you must add three hours to your clock upon arriving at your destination.Īnd while someone is waking and getting ready for another working day under sunny skies, another is heading off to bed under the moonlight. As a result, time is always different in various places on the planet. Welcome to the complex world of time zones. In 1974, two years after Coordinated Universal Time (UTC) was set as the international time standard, New Zealand Standard Time (NZST) was officially defined as UTC+12 in the Time Act 1974.What time is it? Here's how a common daily question can have multiple answers. The time change was made permanent by the Standard Time Act 1945. In 1941, during World War II, clocks were set forward 30 minutes, increasing New Zealand's offset from GMT to 12 hours. New Zealand Mean Time, adopted on November 2, 1868, was 11 hours and 30 minutes ahead of Greenwich Mean Time (GMT). New Zealand was one of the first countries in the world to officially adopt a nationally observed standard time. The New Zealand dependency of Tokelau has no Daylight Saving Time (DST). Time Zones Being Used in Dependencies of New Zealand Offset The Chatham Islands use Chatham Island Standard Time (CHAST) as standard time, while Chatham Island Daylight Time (CHADT) is observed during the DST period. In the country's mainland, New Zealand Standard Time (NZST) is used as standard time, while New Zealand Daylight Time (NZDT) is observed during DST. They will become active again after the next clock change as Daylight Saving Time begins or ends. The above time zones are used during other parts of the year. Time Zones Not Currently Being Observed in New Zealand Offset Tokelau, an archipelago in the Pacific and a dependency of New Zealand, brings the total to three time zones.īecause Tokelau does not use Daylight Saving Time (DST), there are only two corresponding DST time zones. The Chatham Islands, located about 860 kilometers (534 miles) east of Christchurch, have a separate time zone, which is 45 minutes ahead of mainland New Zealand. New Zealand's two main islands, North Island and South Island, both lie in the same time zone. Time Zones Currently Being Used in New Zealand Offset ![]() Business Date to Date (exclude holidays). ![]()
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