Time change on Sunday, clocks turn back one hour. (Photo by Malvestida Magazine on Unsplash)

Don’t forget to turn your clock back one hour

Daylight Saving Time ends on Sunday, Nov. 3, at 2 a.m.

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.

In effect, DST causes a lost hour of sleep in the spring and an extra hour of sleep in the autumn.

George Hudson proposed the idea of daylight saving in 1895.

The German Empire and Austria-Hungary organized the first nationwide implementation starting on April 30, 1916. Many countries have used it at various times since then, particularly since the 1970s energy crisis.

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 observe it, while other parts do not.

Only a minority of the world’s population uses DST; Asia and Africa generally do not observe it.

DST clock shifts sometimes complicate timekeeping and can disrupt travel, billing, record keeping, medical devices, heavy equipment, and sleep patterns.

Computer software often adjusts clocks automatically, but policy changes by various jurisdictions of DST dates and timings may be confusing.

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