The time change in the USA always takes place at 2 o'clock of the respective local time. Unlike Europe, for example, the clock is turned on the same night, but not at the same time. Only Hawaii and most of Arizona remain on standard time all year. Dowd proposed a system of hourly standard time zones for North American railroads around 1863, although he published nothing on the matter at that time and did not consult railroad officials until 1869. It always begins on the second Sunday in March and ends on the first Sunday in November. 1913 time zone map of the United States, showing boundaries very different from today Charles F. Today, daylight saving time is introduced on the same day throughout the country. ![]() However, it was not implemented until 1918 during the First World War. Daylight Saving Time in the USA Earlier than in most other countries, daylight saving time was introduced by Benjamin Franklin in 1784. Together with Wake Atoll (UTC+12), they are on the other side of the International Date Line.
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