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The Eastern Time Zone (ET) is a time zone encompassing part or all of 23 states in the eastern part of the United States, parts of eastern Canada, and the state of Quintana Roo in Mexico. Eastern Standard Time ( EST ) is five hours behind Coordinated Universal Time ( UTC−05:00 ).
This is a list of time zone abbreviations. ... (EST/EDT) Eastern Time (North America) ... International Date Line West time zone UTC−12:00: IDT:
An hour of syndicated programming time (between 7:00 and 8:00 p.m. in the Eastern and Pacific time zones) is lost in the Central and Mountain time zones since network primetime in those areas starts at 7:00 p.m., forcing stations in Mountain or Central time (or in parts of both zones) to choose between airing their 6:00 p.m. newscast and ...
From east to west, the four time zones of the contiguous United States are: Eastern Time Zone (Zone R), which comprises roughly the states on the Atlantic coast and the eastern two thirds of the Ohio Valley. Central Time Zone (Zone S), which comprises roughly the Gulf Coast, Mississippi Valley, and most of the Great Plains.
Before time zones were introduced, every place used local observation of the sun to set their clocks, which means they used local mean time, every city different based on their longitude. Detroit used 05:32:11 west of Greenwich and Menominee 05:50:27 west of Greenwich. Time zones were introduced in the United States in 1883.
Affiliates in the Mountain, Alaskan, and Hawaiian zones are either on their own to delay broadcast by an hour or two, or collectively form a small, regional network feed with others in the same time zone. Prime time is commonly defined as 8:00–11:00 p.m. Eastern/Pacific and 7:00–10:00 p.m. Central/Mountain.
The state "could make a data-driven case for moving to the Atlantic Time Zone year-round," the commission said in a draft report released in September. Massachusetts is considering leaving the ...
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