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From: "Adam H. Kerman" <ahk@chinet.com>
Newsgroups: rec.arts.tv
Subject: Daylight Saving Time wackiness
Date: Sat, 9 Mar 2024 20:44:51 -0000 (UTC)
Organization: A noiseless patient Spider
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Spring ahead!

It is that time of year to discuss the start of Daylight Saving Time.
It's not "Savings".

Federal law requires standard time to be observed throughout the United
States, with the Secretary of Transportation (inheriting the duty from
the sunsetted Interstate Commerce Commission) establishing time zone
boundaries within each state based upon commercial patterns. If a state
is in multiple time zones, the boundary is drawn on county lines.

In Indiana, St. Joseph County (South Bend) has long wanted to be in the
Central Time Zone, but commercial patterns show a stronger association
with nearby Eastern Time Zone counties than with Chicago.

Federal law does not allow states to observe Daylight Saving Time
throughout the winter months, even though 19 states have passed laws to
do so. Federal law allows states to opt out of Daylight Saving Time,
observing standard time throughout the year. The eastern time zone
portion of Indiana had been on standard time throughout the year but use
of Daylight Saving Time in the eastern time zone became effective in
2006.

Hawaii remains on standard time year round. This makes sense given how
close they are to the equator.

Dependencies American Samoa, Guam, Puerto Rico, the Northern Marina
Islands, the US Minor Outlying Islands, and the US Virgin Islands do not
observe Daylight Saving Time.

That brings us to the wackiness that is Arizona. Arizona observes
Standard Time year round but does not control commerce in the Indian
reservations. The multi-state Navajo Nation observes Daylight Saving
Time, but the Hopi reservation, entirely surrounded by the Navajo
Nation, does not observe Daylight Saving Time. There are alternating
bits of land in which tribal jurisdiction changes, for much confusion.

https://apnews.com/article/daylight-saving-arizona-navajo-hopi-native-american-a1016ce873b772ffae544de9fbcd29d9

https://www.timeanddate.com/news/time/usa-start-dst-2024.html