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Map of U.S. time zones with new CST and EST areas displayed. Some U.S. time zones, such as the Samoa Time Zone, are not on this map. This is a list of the time offsets by U.S. states, federal district, and territories. For more about the time zones of the U.S. see time in the United States. Most states are entirely contained within one time zone.
Since then, local times change at 2:00 a.m. EST to 3:00 a.m. EDT on the second Sunday in March, and return from 2:00 a.m. EDT to 1:00 a.m. EST on the first Sunday in November. [4] In Canada, daylight saving time begins and ends on the same days and at the same times as it does in the United States. [5] [6]
Operators of the new railroad lines needed a new time plan that would offer a uniform train schedule for departures and arrivals. Four standard time zones for the continental United States were introduced at noon on November 18, 1883, in Chicago, IL, when the telegraph lines transmitted time signals to all major cities. [4] [5]
The main purpose of this page is to list the current standard time offsets of different countries, territories and regions. Information on daylight saving time or historical changes in offsets can be found in the individual offset articles (e.g. UTC+01:00) or the country-specific time articles (e.g. Time in Russia).
In traditional American usage, dates are written in the month–day–year order (e.g. February 11, 2025) with a comma before and after the year if it is not at the end of a sentence [2] and time in 12-hour notation (4:34 am). International date and time formats typically follow the ISO 8601 format (2025-02-11) for all-numeric dates, [3] write ...
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Independent of daylight saving time, solar noon in Connecticut on the March equinox is approximately 11:54 in the northeast corner and 12:02 in the southwest corner. New England, which includes Connecticut, is one of the few areas in the United States where solar noon is before noon. Connecticut legislation as recently as January 2019 has been ...
AC-500-MSF Time Receiver; ClockWatch Radio Sync [20] F6CTE's CLOCK [15] WWV: 2.5, 5, 10, 15, and 20 MHz AM Voice with modified IRIG-Hformat time code on 100 Hz sub-carrier (CCIR code) HF radio and antenna (plus software if automatic updating of computer time is desired) TrueTime TL-3 WWV Receiver