![]() ![]() Coordinated Universal Time is also known Zulu Time or Z time. The usage of UTC and GMT is based upon a twenty four hour clock, similar to military time, and is based upon the 0 degrees longitude meridian, referred to as the Greenwich meridian in Greenwich, England.Ĭoordinated Universal Time is based on cesium-beam atomic clocks, with leap seconds added to match earth-motion time, where as Greenwich Mean Time is based upon the Earth's rotation and celestial measurements. UTC+5h or GMT +5h would refer to that time zone being five hours ahead of UTC of GMT and so forth for the other time zones. In this example the (-5h) refers to that time zone being five hours behind UTC or GMT and so forth for the other time zones. You will often see time zones represented similar to UTC - 5h or GMT - 5h. Coordinated Universal Time replaced the use of Greenwich Mean Time (GMT) in 1972. EU states continue to use daylight saving time.Coordinated Universal Time (UTC) is used as the official world reference for time. The proposal was originally meant to be introduced in 2021, but the amendment has not taken legal effect. In March 2019, the European Parliament backed a proposal to end the practice of changing the clocks in European Union states. In the United States, the clocks go back on 3 November 2024. ![]() Indiana introduced daylight saving time in 2006. ![]() Arizona does not use DST (apart from the semi-autonomous Navajo Nation), and neither does Hawaii. The USA has daylight saving time, but not all states change their clocks. However, many countries in Africa and Asia situated around the equator do not change the time. Much of Europe and North America, as well as parts of South America and Australasia, change their clocks. Do other countries change the clocks?Ībout 70 countries have some form of daylight saving time, but it varies from region to region. By law however, night workers must not work more than an average of 8 hours in a 24-hour period. Night workers are often advised to check their contracts and discuss the situation with their employer. Of course, not everyone is tucked up in bed at 2am employees who are scheduled to work a night shift at this time may find themselves working an extra hour when the clocks go back to 1am. What happens if I'm working when the clocks go back? This pattern of change was chosen because it occurs on a Saturday night/Sunday morning and would therefore be the least disruptive option for schools and businesses. ![]() Why do the clocks go back at the weekend? It’s an ongoing debate that strongly depends on people’s geographical location, occupation and lifestyle. Similarly, the economic and environmental advantages can vary: for some warmer regions, it’s thought that longer evenings may actually increase energy consumption as people use air-conditioning units for more hours.Some argue that changing the clocks is now redundant given that many of us spend most of our time in well-lit homes, shops and offices, where the amount of daylight makes little difference to our lives.Some farmers have expressed concern about the effect of changing routines for livestock.The inconvenience of changing the clocks twice a year.There is also an argument for against daylight savings time: encouraging people to exercise more outdoors.having longer evenings to support leisure and tourism.reducing energy consumption for environmental reasons.Today people argue that changing the clocks will be good for: In the UK, once summer is over the clocks change back in order to revert to Greenwich Mean Time (GMT).Ī campaign at the beginning of the 20th century successfully argued in favour of changing the clocks during the summer months to avoid wasting time in the morning. Daylight saving, or summer time, is a mechanism to make the most of increased summer daylight hours in the northern hemisphere. ![]()
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