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880RE: [ISO8601] Spring Forward, happy campers

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  • John M. Steele
    Apr 2, 2004
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      Alaska does, Hawaii doesn't. I'm not sure about Antarctica.
      Latitude does make a big difference. Near the equator, there is very little change in the length of the day from summer to winter. At the poles, the change is so extreme that it goes from zero hours to 24, so maybe DST isn't much use there. At moderately high latitudes, the long summer days are better balanced to human schedules by shifting the day, so that sunrise and humans getting up roughly coincide and the extra hours of daylight are in the early evening to reduce usage of electric lights instead of wasted at 5AM. In the winter, the day is just too short anyway, and the conventional solar transit at noon (more or less with standard time zones) works best. At least that is the argument.
      Obviously, humans could keep the clock the same and simply change their schedule, but changing the schedule of all store hours, business hours broadcast hours for radio/tv, etc gets a bit confusing. My "atomic clock" changes itself, my computer asks if it did it right. Not really much of a nuisance.
      -----Original Message-----
      From: NGUYEN Adam [mailto:adam917@...]
      Sent: Friday, April 02, 2004 08:56 PM
      To: ISO8601@yahoogroups.com
      Subject: RE: [ISO8601] Spring Forward, happy campers

      It doesn't really have to do with the latitude of the country
      in question. I think Alaska and Antarctica don't do DST either; and they
      are at the parts of the world that would be most affected by DST. Correct
      me if I'm wrong.
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