Timezones and time changes in the United StatesThere are several timezones in the United States. Countries with a large distance from West to East are often devided into two or more timezones to adjust daytimes to the position of the sun. Timezones are always computed relatively to UTC, the "Universal Time Coordinated".
In the United States exists a time difference of up to 5 hours between the East and the West. Like in most parts of the USA, there is a distinction in the United States drawn between standard time and daylight saving time (also called winter time and summer time), but this distiction is not nationwide. 8 regions put the clocks forward by 1 hour in summer. 2 regions keep the standard time year-round.
The next clock change in New York will be on November 07th, 2021 at 2:00 to standard time.
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Timezones by region
|Region||UTC||Standard time||Daylight saving time|
|Adak||-10||Hawaii Standard Time (HST)||Hawaii Daylight Time (HDT)|
|Anchorage||-9||Alaska Standard Time (AKST)||Alaska Daylight Time (AKDT)|
|Chicago||-6||Central Standard Time (CST)||Central Daylight Time (CDT)|
|Denver||-7||Mountain Standard Time (MST)||Mountain Daylight Time (MDT)|
|Detroit||-5||Eastern Standard Time (EST)||Eastern Daylight Time (EDT)|
|Los Angeles||-8||Pacific Standard Time (PST)||Pacific Daylight Time (PDT)|
|Menominee||-6||Central Standard Time (CST)||Central Daylight Time (CDT)|
|New York||-5||Eastern Standard Time (EST)||Eastern Daylight Time (EDT)|
|Phoenix||-7||Mountain Standard Time (MST)||discontinued 1967|
|Honolulu||-10||Hawaii Standard Time (HST)||discontinued 1945|
The next clock changes in New York
|Nov 07, 2021||2:00 am||-1 hour to standard time|
|Mar 13, 2022||2:00 am||+1 hour to daylight saving time|
|Nov 06, 2022||2:00 am||-1 hour to standard time|
|Mar 12, 2023||2:00 am||+1 hour to daylight saving time|
|Nov 05, 2023||2:00 am||-1 hour to standard time|
|Mar 10, 2024||2:00 am||+1 hour to daylight saving time|
|Nov 03, 2024||2:00 am||-1 hour to standard time|
|Mar 09, 2025||2:00 am||+1 hour to daylight saving time|
|Nov 02, 2025||2:00 am||-1 hour to standard time|
Changes in Daylight Saving TimesIn Phoenix Daylight Saving Time has been observed since 1918 until 10/29/1967.
In Honolulu Daylight Saving Time has been observed since 1933 until 09/30/1945.
› All countries with Daylight Saving Time