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Santo Domingo was -4:40 until 1933 when it switched to -5:00, then -4:00 in 1974, then back to -5:00 in 2000 and back to -4:00 a few months later because they were going to do whatever Puerto Rico did, and then Puerto Rico didn't. Goose Bay changed to -4:00 1966, but St Johns stayed at -3:30. Meanwhile in Canada, St Johns and Goose Bay were -3:30:52 until 1935 when it became 3:30.
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# cites Session Laws of Hawaii 1933, "Act. # effective the second Sunday of June, 1947 (page 219, with no time of # when clocks changed) and that clocks were changed by 30 minutes # from to (page 221, with no time of day given for # act," (page 220), that year-round daylight saving time was in effect # last Sunday of each September, but less than a month later repealed the # saving for the period between the last Sunday of each April and the # 13, 1896 (page 218), that in "1933, the Legislature decreed daylight # and indicates that standard time was adopted effective noon, January
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# of volume 26 of The Hawaiian Journal of History (1992). Here's a great map of how far off a given time zone is.Īccording to the IANA nee Olson Time Zone Database, the only non-hour time zone in the US after the Standard Time Act of 1918 was Hawaii who used -10:30 from 1896 to 1947. You can see things like China being like "EVERY TIME IS BEIJING TIME!", and Alaska is like "JUNEAU TIME FOR EVERYONE, nobody lives up there anyway", and I don't even know what's going on in Russia. Time zones have only a vague relation with the position of the Sun anyway. Samoa switched sides of the IDL to have five shared work days with Australia and New Zealand, their biggest trading partners. The nation of Kiribati was, until recently, split by the International Date Line, now it swings waaaay out east to UTC+14. Chicago is so important that the six nearby counties in Indiana switched to its time zone. This (partly) explains the mess that is Indiana. It is so disorienting that some places have changed their time zone to be the same as whomever they do the most business with. Why? Because modern life isn't so linked to the Sun that you can't be an hour off, and because more time zones mean more people having to live and work across those borders every day.