Updating windows daylight savings
DST is generally not observed near the equator, where sunrise times do not vary enough to justify it.Some countries observe it only in some regions; for example, parts of Australia observes it, while other parts do not.It became common during World War II, and was widely adopted in America and Europe from the 1970s as a result of the 1970s energy crisis.Since then, the world has seen many enactments, adjustments, and repeals.Members of the European Union conduct a coordinated shift, shifting all zones at the same instant, at Coordinated Universal Time (UTC), which means that it changes at Central European Time (CET), equivalent to Eastern European Time (EET); as a result, the time differences across European time zones remain constant.North America shifts at but at the local time and is consequently uncoordinated - so that, for example, Mountain Time is, for one hour in the autumn, zero hours ahead of Pacific Time instead of one hour ahead and, for one hour in the spring, two hours ahead of Pacific Time instead of one hour ahead.
Most jurisdictions abandoned DST in the years after the war ended in 1918, with exceptions including Canada, the UK, France, Ireland, and the United States.
Daylight saving time (DST), also daylight savings time or daylight time (United States) and summer time (United Kingdom, European Union, and others), is the practice of advancing clocks during summer months so that evening daylight lasts longer, while sacrificing normal sunrise times.
Typically, regions that use daylight saving time adjust clocks forward one hour close to the start of spring and adjust them backward in the autumn.
Willett lobbied for the proposal in the UK until his death in 1915.
Port Arthur, Ontario, was the first city in the world to enact DST on July 1, 1908.