Daylight Saving Time Page: 3 of 5
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first Sunday in April and having the end remain the last Sunday in October. Since then,
bills have been introduced to move the beginning of DST to the last Sunday in March and
the end to the first Sunday in November. No action has been taken on these bills.
Changing an Area's Time Zone or Moving an Area On or Off DST
Moving a state or an area within a state from one time zone to another requires either
a public law or a regulation issued by DOT. In the latter case, DOT recommends the
following procedure. The request should be submitted by the highest political authority
in the area in question. For example, the governor or state legislature generally makes the
request for a state or any part of the state; a board (or boards) of county commissioners
may make a request for one or more counties. If the request is made by a legislative body,
it must be accompanied by certification that official action has been taken by that body.
The request should document evidence that the change will serve the convenience of
commerce in the area. The convenience of commerce is defined broadly to consider such
circumstances as the shipment of goods within the community; the origin of television and
radio broadcasts; the areas where most residents work, attend school, worship, or get
health care; the location of airports, railway, and bus stations; and the major elements of
the community's economy.
The General Counsel of DOT considers the request and, if it is found that a time zone
change might benefit commerce, a proposed regulation is issued inviting public comment.
Usually a hearing is held in the area so that all sides of the issue can be represented by the
affected parties. After analyzing the comments, the General Counsel decides either to
deny the request or forward it to the Secretary of Transportation. If the Secretary agrees
that the convenience of commerce would benefit, the change is instituted, usually at the
next changeover to or from DST.
Under the Uniform Time Act, moving an area on or off DST is accomplished through
legal action at the state level. Some states require legislation while others require
executive action such as a governor's executive order. Information on procedures
required in a specific state may be obtained from that state's legislature or governor's
office. Although it may exempt itself, if a state decides to observe DST, the dates of
observance must comply with federal legislation.
P.L. 89-387, April 13, 1966, Uniform Time Act of 1966
Established uniform standard time to be observed in established time zones. The
standard time would be advanced one hour within each time zone beginning at 2:00 a.m.
on the last Sunday in April and turned back one hour beginning at 2:00 a.m. on the last
Sunday in October. States were allowed to exempt themselves as long as the entire state
P.L. 92-267, March 30, 1972, [Uniform Time Act Amendments]
Allowed states split by time zone boundaries to exempt the entire state or that part
of the state in a different time zone from DST. The states affected are: Alaska, Florida,
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Daylight Saving Time, report, February 9, 1998; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc810157/m1/3/: accessed January 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.