Introduction to time zones & DST in United States
There are totally 9 time zones in United States, four in the mainland, one in Alaska, one in Howaii, and the other three in oversea territories.
Four time zones in the mainland are: Eastern Standard Time、Central Standard Time、Mountain Standard Time、Pacific Standard Time
Daylight Saving Time in United States begins on the second Sunday in March, and ends on the first Sunday of November. Take 2017 as an example, United States observes DST on March 12th, and ends on November 5th.
It is worth nothing that, some parts of United States don't observe Daylight Saving Time, including most of Arizona except the Navajo Nation Community, Howaii, American Samoa, Guam, Puerto Rico and the U.S. Virgin Islands.
Time zones currently being used in United States
United States is currently using 10 time zones , SST , HST , HDT , AKDT , MST , PDT , MDT , CDT , AST , EDT
| Offset | Time Zone | Example City | Current Time |
| UTC -11:00 | SST | Pago Pago | 20:56 Sun, 2025-03-16 |
| UTC -10:00 | HST | Honolulu | 21:56 Sun, 2025-03-16 |
| UTC -09:00 | HDT | Adak, Alaska | 22:56 Sun, 2025-03-16 |
| UTC -08:00 | AKDT | Anchorage | 23:56 Sun, 2025-03-16 |
| UTC -07:00 | MST | Phoenix | 00:56 Mon, 2025-03-17 |
| UTC -07:00 | PDT | Los Angeles | 00:56 Mon, 2025-03-17 |
| UTC -06:00 | MDT | El Paso | 01:56 Mon, 2025-03-17 |
| UTC -05:00 | CDT | Chicago | 02:56 Mon, 2025-03-17 |
| UTC -04:00 | AST | Ponce | 03:56 Mon, 2025-03-17 |
| UTC -04:00 | EDT | New York City | 03:56 Mon, 2025-03-17 |
Time zones to be used in United States
| Offset | Time Zone | Commences |
| UTC -10:00 | HST | 2025-11-02 |
| UTC -09:00 | AKST | 2025-11-02 |
| UTC -08:00 | PST | 2025-11-02 |
| UTC -07:00 | MST | 2025-11-02 |
| UTC -06:00 | CST | 2025-11-02 |
| UTC -05:00 | EST | 2025-11-02 |
Time of Cities in United States
SST (UTC -11:00)
| City | Time |
|---|---|
| Pago Pago | 20:56 Sun, 2025-03-16 |
HST (UTC -10:00)
HDT (UTC -09:00)
| City | Time |
|---|---|
| Adak, Alaska | 22:56 Sun, 2025-03-16 |
AKDT (UTC -08:00)
| City | Time |
|---|---|
| Anchorage | 23:56 Sun, 2025-03-16 |
| Fairbanks | 23:56 Sun, 2025-03-16 |
| Juneau, Alaska | 23:56 Sun, 2025-03-16 |
| Sitka, Alaska | 23:56 Sun, 2025-03-16 |
| Valdez | 23:56 Sun, 2025-03-16 |
| City | Time |
|---|---|
| Nome, Alaska | 23:56 Sun, 2025-03-16 |
| Seward | 23:56 Sun, 2025-03-16 |
| Metlakatla, Alaska | 23:56 Sun, 2025-03-16 |
| Yakutat | 23:56 Sun, 2025-03-16 |
MST (UTC -07:00)
| City | Time |
|---|---|
| Phoenix | 00:56 Mon, 2025-03-17 |
| Tucson | 00:56 Mon, 2025-03-17 |
| Mesa | 00:56 Mon, 2025-03-17 |
| Chandler | 00:56 Mon, 2025-03-17 |
| Glendale, Arizona | 00:56 Mon, 2025-03-17 |
| City | Time |
|---|---|
| Scottsdale | 00:56 Mon, 2025-03-17 |
| Gilbert | 00:56 Mon, 2025-03-17 |
| Tempe | 00:56 Mon, 2025-03-17 |
| Peoria | 00:56 Mon, 2025-03-17 |
| Flagstaff | 00:56 Mon, 2025-03-17 |
PDT (UTC -07:00)
| City | Time |
|---|---|
| Los Angeles | 00:56 Mon, 2025-03-17 |
| San diego | 00:56 Mon, 2025-03-17 |
| San Diego | 00:56 Mon, 2025-03-17 |
| San Jose | 00:56 Mon, 2025-03-17 |
| San Gabriel | 00:56 Mon, 2025-03-17 |
| San Francisco | 00:56 Mon, 2025-03-17 |
| Seattle | 00:56 Mon, 2025-03-17 |
| Portland | 00:56 Mon, 2025-03-17 |
| Las Vegas | 00:56 Mon, 2025-03-17 |
| Fresno | 00:56 Mon, 2025-03-17 |
| Sacramento | 00:56 Mon, 2025-03-17 |
| Long Beach | 00:56 Mon, 2025-03-17 |
| Oakland | 00:56 Mon, 2025-03-17 |
| Bakersfield | 00:56 Mon, 2025-03-17 |
| Anaheim | 00:56 Mon, 2025-03-17 |
| Santa Ana | 00:56 Mon, 2025-03-17 |
| Stockton | 00:56 Mon, 2025-03-17 |
| Riverside | 00:56 Mon, 2025-03-17 |
| Irvine | 00:56 Mon, 2025-03-17 |
| Henderson | 00:56 Mon, 2025-03-17 |
| Chula Vista | 00:56 Mon, 2025-03-17 |
| North Las Vegas | 00:56 Mon, 2025-03-17 |
| Reno | 00:56 Mon, 2025-03-17 |
| Paradise | 00:56 Mon, 2025-03-17 |
| Fremont | 00:56 Mon, 2025-03-17 |
| Santa Clarita | 00:56 Mon, 2025-03-17 |
| San Bernardino | 00:56 Mon, 2025-03-17 |
| Spokane | 00:56 Mon, 2025-03-17 |
| Oxnard | 00:56 Mon, 2025-03-17 |
| Fontana | 00:56 Mon, 2025-03-17 |
| Modesto | 00:56 Mon, 2025-03-17 |
| Tacoma | 00:56 Mon, 2025-03-17 |
| Moreno Valley | 00:56 Mon, 2025-03-17 |
| Glendale, California | 00:56 Mon, 2025-03-17 |
| Huntington Beach | 00:56 Mon, 2025-03-17 |
| Garden Grove | 00:56 Mon, 2025-03-17 |
| Santa Rosa | 00:56 Mon, 2025-03-17 |
| Oceanside | 00:56 Mon, 2025-03-17 |
| Ontario | 00:56 Mon, 2025-03-17 |
| Rancho Cucamonga | 00:56 Mon, 2025-03-17 |
| Vancouver | 00:56 Mon, 2025-03-17 |
| Corona | 00:56 Mon, 2025-03-17 |
| Lancaster | 00:56 Mon, 2025-03-17 |
| Eugene | 00:56 Mon, 2025-03-17 |
| Salem | 00:56 Mon, 2025-03-17 |
| Elk Grove | 00:56 Mon, 2025-03-17 |
| Palmdale | 00:56 Mon, 2025-03-17 |
| City | Time |
|---|---|
| Salinas | 00:56 Mon, 2025-03-17 |
| Hayward | 00:56 Mon, 2025-03-17 |
| Pomona | 00:56 Mon, 2025-03-17 |
| Torrance | 00:56 Mon, 2025-03-17 |
| Escondido | 00:56 Mon, 2025-03-17 |
| Sunnyvale | 00:56 Mon, 2025-03-17 |
| Pasadena | 00:56 Mon, 2025-03-17 |
| Orange | 00:56 Mon, 2025-03-17 |
| Fullerton | 00:56 Mon, 2025-03-17 |
| Thousand Oaks | 00:56 Mon, 2025-03-17 |
| Simi Valley | 00:56 Mon, 2025-03-17 |
| Bellevue | 00:56 Mon, 2025-03-17 |
| Concord | 00:56 Mon, 2025-03-17 |
| Santa Clara | 00:56 Mon, 2025-03-17 |
| City of Vallejo | 00:56 Mon, 2025-03-17 |
| City of Berkeley | 00:56 Mon, 2025-03-17 |
| Downey | 00:56 Mon, 2025-03-17 |
| Costa Mesa | 00:56 Mon, 2025-03-17 |
| Inglewood | 00:56 Mon, 2025-03-17 |
| Ventura | 00:56 Mon, 2025-03-17 |
| West Covina | 00:56 Mon, 2025-03-17 |
| Norwalk | 00:56 Mon, 2025-03-17 |
| Burbank | 00:56 Mon, 2025-03-17 |
| Daly City | 00:56 Mon, 2025-03-17 |
| Santa Maria,CA | 00:56 Mon, 2025-03-17 |
| Santa Maria | 00:56 Mon, 2025-03-17 |
| Newport beach | 00:56 Mon, 2025-03-17 |
| Palo alto | 00:56 Mon, 2025-03-17 |
| Monterey Park | 00:56 Mon, 2025-03-17 |
| Hacienda Heights | 00:56 Mon, 2025-03-17 |
| Rowland Heights | 00:56 Mon, 2025-03-17 |
| San jose | 00:56 Mon, 2025-03-17 |
| Menlo Park | 00:56 Mon, 2025-03-17 |
| Monterey | 00:56 Mon, 2025-03-17 |
| Elko | 00:56 Mon, 2025-03-17 |
| Morro Bay | 00:56 Mon, 2025-03-17 |
| Mountain View | 00:56 Mon, 2025-03-17 |
| Mammoth Lakes | 00:56 Mon, 2025-03-17 |
| Sausalito | 00:56 Mon, 2025-03-17 |
| Solvang | 00:56 Mon, 2025-03-17 |
| Big sur | 00:56 Mon, 2025-03-17 |
| Lake tahoe | 00:56 Mon, 2025-03-17 |
| Big bear lake | 00:56 Mon, 2025-03-17 |
| Mojave | 00:56 Mon, 2025-03-17 |
| Camarillo | 00:56 Mon, 2025-03-17 |
| City of El Monte | 00:56 Mon, 2025-03-17 |
MDT (UTC -06:00)
| City | Time |
|---|---|
| El Paso | 01:56 Mon, 2025-03-17 |
| Denver | 01:56 Mon, 2025-03-17 |
| Las Vegas NM | 01:56 Mon, 2025-03-17 |
| Albuquerque | 01:56 Mon, 2025-03-17 |
| Colorado springs | 01:56 Mon, 2025-03-17 |
| Colorado Springs | 01:56 Mon, 2025-03-17 |
| Aurora | 01:56 Mon, 2025-03-17 |
| Boise | 01:56 Mon, 2025-03-17 |
| Salt Lake City | 01:56 Mon, 2025-03-17 |
| Fort Collins | 01:56 Mon, 2025-03-17 |
| Lakewood | 01:56 Mon, 2025-03-17 |
| West Valley City | 01:56 Mon, 2025-03-17 |
| Provo | 01:56 Mon, 2025-03-17 |
| City | Time |
|---|---|
| Missoula | 01:56 Mon, 2025-03-17 |
| West Jordan | 01:56 Mon, 2025-03-17 |
| Pueblo | 01:56 Mon, 2025-03-17 |
| City of Arvada | 01:56 Mon, 2025-03-17 |
| City of Westminster | 01:56 Mon, 2025-03-17 |
| Billings | 01:56 Mon, 2025-03-17 |
| Boulder | 01:56 Mon, 2025-03-17 |
| Santa fe | 01:56 Mon, 2025-03-17 |
| Idaho Falls | 01:56 Mon, 2025-03-17 |
| Bozeman | 01:56 Mon, 2025-03-17 |
| Moab | 01:56 Mon, 2025-03-17 |
| Panguitch | 01:56 Mon, 2025-03-17 |
| Kanab | 01:56 Mon, 2025-03-17 |
CDT (UTC -05:00)
| City | Time |
|---|---|
| Chicago | 02:56 Mon, 2025-03-17 |
| Kansas City metropolitan area | 02:56 Mon, 2025-03-17 |
| Houston | 02:56 Mon, 2025-03-17 |
| San Antonio | 02:56 Mon, 2025-03-17 |
| Dallas | 02:56 Mon, 2025-03-17 |
| Austin | 02:56 Mon, 2025-03-17 |
| Fort Worth | 02:56 Mon, 2025-03-17 |
| Nashville | 02:56 Mon, 2025-03-17 |
| Memphis | 02:56 Mon, 2025-03-17 |
| Milwaukee | 02:56 Mon, 2025-03-17 |
| Oklahoma City | 02:56 Mon, 2025-03-17 |
| Omaha | 02:56 Mon, 2025-03-17 |
| Tulsa | 02:56 Mon, 2025-03-17 |
| New Orleans | 02:56 Mon, 2025-03-17 |
| Minneapolis | 02:56 Mon, 2025-03-17 |
| Wichita | 02:56 Mon, 2025-03-17 |
| Arlington | 02:56 Mon, 2025-03-17 |
| St louis | 02:56 Mon, 2025-03-17 |
| St. Louis | 02:56 Mon, 2025-03-17 |
| Corpus Christi | 02:56 Mon, 2025-03-17 |
| Saint Paul | 02:56 Mon, 2025-03-17 |
| Plano | 02:56 Mon, 2025-03-17 |
| Lincoln | 02:56 Mon, 2025-03-17 |
| Lubbock | 02:56 Mon, 2025-03-17 |
| Laredo | 02:56 Mon, 2025-03-17 |
| Madison | 02:56 Mon, 2025-03-17 |
| Baton Rouge | 02:56 Mon, 2025-03-17 |
| Garland | 02:56 Mon, 2025-03-17 |
| Irving | 02:56 Mon, 2025-03-17 |
| Birmingham | 02:56 Mon, 2025-03-17 |
| Montgomery | 02:56 Mon, 2025-03-17 |
| Des Moines | 02:56 Mon, 2025-03-17 |
| Amarillo | 02:56 Mon, 2025-03-17 |
| Shreveport | 02:56 Mon, 2025-03-17 |
| Mobile | 02:56 Mon, 2025-03-17 |
| City | Time |
|---|---|
| Little Rock | 02:56 Mon, 2025-03-17 |
| Brownsville | 02:56 Mon, 2025-03-17 |
| Huntsville | 02:56 Mon, 2025-03-17 |
| Grand Prairie | 02:56 Mon, 2025-03-17 |
| Jackson | 02:56 Mon, 2025-03-17 |
| Overland Park | 02:56 Mon, 2025-03-17 |
| Springfield, Missouri | 02:56 Mon, 2025-03-17 |
| Sioux Falls | 02:56 Mon, 2025-03-17 |
| Mesquite | 02:56 Mon, 2025-03-17 |
| Clarksville | 02:56 Mon, 2025-03-17 |
| Waco | 02:56 Mon, 2025-03-17 |
| McAllen | 02:56 Mon, 2025-03-17 |
| Topeka | 02:56 Mon, 2025-03-17 |
| Carrollton | 02:56 Mon, 2025-03-17 |
| Cedar Rapids | 02:56 Mon, 2025-03-17 |
| Lafayette | 02:56 Mon, 2025-03-17 |
| Beaumont | 02:56 Mon, 2025-03-17 |
| Evansville | 02:56 Mon, 2025-03-17 |
| Abilene | 02:56 Mon, 2025-03-17 |
| Independence | 02:56 Mon, 2025-03-17 |
| Norman | 02:56 Mon, 2025-03-17 |
| Murfreesboro | 02:56 Mon, 2025-03-17 |
| Columbia | 02:56 Mon, 2025-03-17 |
| Rochester, Minnesota | 02:56 Mon, 2025-03-17 |
| Wichita Falls | 02:56 Mon, 2025-03-17 |
| Green Bay | 02:56 Mon, 2025-03-17 |
| Davenport | 02:56 Mon, 2025-03-17 |
| City of Gary | 02:56 Mon, 2025-03-17 |
| Bismarck, North Dakota | 02:56 Mon, 2025-03-17 |
| Menominee, Michigan | 02:56 Mon, 2025-03-17 |
| Tell City, Indiana | 02:56 Mon, 2025-03-17 |
| Beulah, North Dakota | 02:56 Mon, 2025-03-17 |
| New Salem, North Dakota | 02:56 Mon, 2025-03-17 |
| Rainy River, Ontario | 02:56 Mon, 2025-03-17 |
AST (UTC -04:00)
| City | Time |
|---|---|
| Ponce | 03:56 Mon, 2025-03-17 |
EDT (UTC -04:00)
| City | Time |
|---|---|
| New York City | 03:56 Mon, 2025-03-17 |
| Atlanta | 03:56 Mon, 2025-03-17 |
| Detroit | 03:56 Mon, 2025-03-17 |
| Philadelphia | 03:56 Mon, 2025-03-17 |
| Bronx | 03:56 Mon, 2025-03-17 |
| Jacksonville | 03:56 Mon, 2025-03-17 |
| Indianapolis | 03:56 Mon, 2025-03-17 |
| Charlotte | 03:56 Mon, 2025-03-17 |
| Columbus, Ohio | 03:56 Mon, 2025-03-17 |
| Louisville | 03:56 Mon, 2025-03-17 |
| Washington | 03:56 Mon, 2025-03-17 |
| Boston | 03:56 Mon, 2025-03-17 |
| Baltimore | 03:56 Mon, 2025-03-17 |
| Raleigh | 03:56 Mon, 2025-03-17 |
| Virginia beach | 03:56 Mon, 2025-03-17 |
| Miami Beach | 03:56 Mon, 2025-03-17 |
| Miami | 03:56 Mon, 2025-03-17 |
| Cleveland | 03:56 Mon, 2025-03-17 |
| Tampa | 03:56 Mon, 2025-03-17 |
| Lexington | 03:56 Mon, 2025-03-17 |
| Pittsburgh | 03:56 Mon, 2025-03-17 |
| Cincinnati | 03:56 Mon, 2025-03-17 |
| Toledo | 03:56 Mon, 2025-03-17 |
| Greensboro | 03:56 Mon, 2025-03-17 |
| Newark | 03:56 Mon, 2025-03-17 |
| Buffalo | 03:56 Mon, 2025-03-17 |
| St. Petersburg | 03:56 Mon, 2025-03-17 |
| Fort Wayne | 03:56 Mon, 2025-03-17 |
| Durham | 03:56 Mon, 2025-03-17 |
| Jersey City | 03:56 Mon, 2025-03-17 |
| Winston-Salem | 03:56 Mon, 2025-03-17 |
| Orlando | 03:56 Mon, 2025-03-17 |
| Arlington County | 03:56 Mon, 2025-03-17 |
| Hialeah | 03:56 Mon, 2025-03-17 |
| Richmond | 03:56 Mon, 2025-03-17 |
| Rochester, New York | 03:56 Mon, 2025-03-17 |
| Fayetteville | 03:56 Mon, 2025-03-17 |
| Yonkers | 03:56 Mon, 2025-03-17 |
| Akron | 03:56 Mon, 2025-03-17 |
| Augusta | 03:56 Mon, 2025-03-17 |
| Grand Rapids | 03:56 Mon, 2025-03-17 |
| Columbus, Georgia | 03:56 Mon, 2025-03-17 |
| Worcester | 03:56 Mon, 2025-03-17 |
| Tallahassee | 03:56 Mon, 2025-03-17 |
| Knoxville | 03:56 Mon, 2025-03-17 |
| Providence | 03:56 Mon, 2025-03-17 |
| City | Time |
|---|---|
| Chattanooga | 03:56 Mon, 2025-03-17 |
| City of Cape Coral | 03:56 Mon, 2025-03-17 |
| Fort Lauderdale | 03:56 Mon, 2025-03-17 |
| City of Pembroke Pines | 03:56 Mon, 2025-03-17 |
| Springfield, Massachusetts | 03:56 Mon, 2025-03-17 |
| Savannah | 03:56 Mon, 2025-03-17 |
| Syracuse | 03:56 Mon, 2025-03-17 |
| Bridgeport | 03:56 Mon, 2025-03-17 |
| Dayton | 03:56 Mon, 2025-03-17 |
| Alexandria | 03:56 Mon, 2025-03-17 |
| Warren | 03:56 Mon, 2025-03-17 |
| New Haven | 03:56 Mon, 2025-03-17 |
| Sterling Heights | 03:56 Mon, 2025-03-17 |
| Columbia, South Carolina | 03:56 Mon, 2025-03-17 |
| Stamford | 03:56 Mon, 2025-03-17 |
| Elizabeth | 03:56 Mon, 2025-03-17 |
| Hartford | 03:56 Mon, 2025-03-17 |
| Coral Springs | 03:56 Mon, 2025-03-17 |
| Allentown | 03:56 Mon, 2025-03-17 |
| Charleston | 03:56 Mon, 2025-03-17 |
| Athens | 03:56 Mon, 2025-03-17 |
| Lansing | 03:56 Mon, 2025-03-17 |
| Ann Arbor | 03:56 Mon, 2025-03-17 |
| City of Lowell | 03:56 Mon, 2025-03-17 |
| Cambridge | 03:56 Mon, 2025-03-17 |
| Manchester | 03:56 Mon, 2025-03-17 |
| Waterbury | 03:56 Mon, 2025-03-17 |
| Clearwater | 03:56 Mon, 2025-03-17 |
| Miami Gardens | 03:56 Mon, 2025-03-17 |
| Flint | 03:56 Mon, 2025-03-17 |
| South Bend | 03:56 Mon, 2025-03-17 |
| Livonia | 03:56 Mon, 2025-03-17 |
| Charlottesville | 03:56 Mon, 2025-03-17 |
| Annapolis | 03:56 Mon, 2025-03-17 |
| New London | 03:56 Mon, 2025-03-17 |
| Vincennes, Indiana | 03:56 Mon, 2025-03-17 |
| Florida City | 03:56 Mon, 2025-03-17 |
| Monticello, Kentucky | 03:56 Mon, 2025-03-17 |
| Knox, Indiana | 03:56 Mon, 2025-03-17 |
| Cape Cod | 03:56 Mon, 2025-03-17 |
| Winamac, Indiana | 03:56 Mon, 2025-03-17 |
| Vevay, Indiana | 03:56 Mon, 2025-03-17 |
| Ocean city | 03:56 Mon, 2025-03-17 |
| Marengo, Indiana | 03:56 Mon, 2025-03-17 |
| Niagara falls | 03:56 Mon, 2025-03-17 |