The Eastern Time Zone (ET) of the Western Hemisphere – also known as North American Eastern Standard Time (NAEST) – is a time zone that falls mostly along the east coast of North America and the west coast of South America. Its UTC time offset is −5 hrs (UTC-05) during standard time and -4 hrs (UTC-04) during daylight saving time. The clock time in this zone is based on the mean solar time of the 75th meridian west of the Greenwich Observatory.
In the United States and Canada, this time zone is generally called Eastern Time (ET). Specifically, it is Eastern Standard Time (EST) when observing standard time (winter), and Eastern Daylight Time (EDT) when observing daylight saving time (summer).
The 1966 Uniform Time Act in the USA meant that EDT was instituted on the last Sunday in April, starting in 1966, throughout most of the USA. EST would be re-instituted on the last Sunday in October. The act was amended to make the first Sunday in April the beginning of EDT as of 1987. The Energy Policy Act of 2005 extended daylight saving time in the U.S. beginning in 2007. The local time changes at 02:00 EST to 03:00 EDT on the second Sunday in March and returns at 02:00 EDT to 01:00 EST on the first Sunday in November. In Canada, the time changes as it does in the U.S.
These states and Washington, D.C. observe only Eastern Time:
These six states are split between Eastern and Central time:
Eastern Time is also used somewhat as a de facto official time for all of the United States, since it includes the capital (Washington, D.C.), the largest city (New York City), and approximately half the country's population. National media organizations will often report when events happened or are scheduled to happen in Eastern Time even if they occurred in another time zone, and TV schedules are also almost always posted in Eastern Time. Major professional sports leagues also post all game times in Eastern time, even if both teams are from the same time zone, outside of Eastern Time. For example a game time between two teams from Pacific Time Zone will still be posted in Eastern time (for example, one may see "Seattle at Los Angeles" with "10:00 pm" posted as the start time for the game, often without even clarifying the time is posted in Eastern time).
Most cable channels advertise airing times in Eastern time, sometimes including either Central or Pacific time, depending on whether there is a separate western feed. If there is a separate western feed, it generally airs the same programming delayed by three hours, in which case a program may be advertised as 8PM "Eastern and Pacific." Those in the Mountain time zone will see the program at 9PM (assuming they receive the west feed) and those in Central time zone will see it at 7PM (assuming they receive the east feed).
The countries that use Eastern Time Zone include:
The following western Caribbean nations and territories in the Eastern Time Zone are:
The eastern Caribbean islands are in the Atlantic Time Zone (UTC-4), sometimes called Eastern Caribbean Time Zone. This time zone includes the U.S. Virgin Islands and Puerto Rico. Atlantic/Eastern Caribbean Time is one hour ahead of Eastern Time.
The Eastern/Atlantic time zone boundary divides the island of Hispaniola, with Haiti on Eastern Time and the Dominican Republic on Atlantic Time.
Because they are located in the tropics, many Caribbean islands do not observe Daylight Saving Time. Thus, when the mainland United States is on D.S.T., those islands in the Atlantic Time zone are on the same time as Eastern Daylight Time, while those in the Eastern Time zone are on the same time as Central Daylight Time.
In South America this time zone is observed in:
The term 'EST' also describes domestic usage of the Australian Eastern Standard Time/AEST (UTC +10:00) timezone.
|Time zones in North America|
|Name||Hawaii-Aleutian Standard||Alaska Standard||Pacific Standard||Mountain Standard||Central Standard||Eastern Standard||Atlantic Standard||Newfoundland Standard||Saint Pierre and Miquelon Standard|
|Hawaii-Aleutian Daylight||Alaska Daylight||Pacific Daylight||Mountain Daylight||Central Daylight||Eastern Daylight||Atlantic Daylight||Newfoundland Daylight||Saint Pierre and Miquelon Daylight|
Eastern Time Zone (ET) is the time zone for the eastern part of the Americas including the United States, Canada and parts of South America and the Caribbean. ET is five hours behind UTC in winter, which is called Eastern Standard Time (EST). It is four hours behind UTC during summer Daylight saving time, when it is called Eastern Daylight Time (EDT).
In the United States, the following states are part of the Eastern Time Zone:
Parts of several other states use Eastern Time as well:
The following countries that use Eastern Time Zone include:
In South America this time zone is observed in: