US Time Zone Map
See the current local time in every US time zone on one map. Click a city marker or search a place to read its time, UTC offset and Daylight Saving status, or scan the live table sorted from west to east.
New York, NY: 4:45 PM
Fri, Oct 30 · EDT · UTC-04:00 · Daylight Saving Time active
| City | Local time | Zone | Offset | DST |
|---|---|---|---|---|
| Honolulu, HI | 10:45 AM | HST | UTC-10:00 | None |
| Anchorage, AK | 12:45 PM | AKDT | UTC-08:00 | Active |
| Las Vegas, NV | 1:45 PM | PDT | UTC-07:00 | Active |
| Los Angeles, CA | 1:45 PM | PDT | UTC-07:00 | Active |
| Phoenix, AZ | 1:45 PM | MST | UTC-07:00 | None |
| Seattle, WA | 1:45 PM | PDT | UTC-07:00 | Active |
| Boise, ID | 2:45 PM | MDT | UTC-06:00 | Active |
| Denver, CO | 2:45 PM | MDT | UTC-06:00 | Active |
| El Paso, TX | 2:45 PM | MDT | UTC-06:00 | Active |
| Salt Lake City, UT | 2:45 PM | MDT | UTC-06:00 | Active |
| Chicago, IL | 3:45 PM | CDT | UTC-05:00 | Active |
| Houston, TX | 3:45 PM | CDT | UTC-05:00 | Active |
| Minneapolis, MN | 3:45 PM | CDT | UTC-05:00 | Active |
| New Orleans, LA | 3:45 PM | CDT | UTC-05:00 | Active |
| Atlanta, GA | 4:45 PM | EDT | UTC-04:00 | Active |
| Detroit, MI | 4:45 PM | EDT | UTC-04:00 | Active |
| Indianapolis, IN | 4:45 PM | EDT | UTC-04:00 | Active |
| Miami, FL | 4:45 PM | EDT | UTC-04:00 | Active |
| New York, NY | 4:45 PM | EDT | UTC-04:00 | Active |
| San Juan, PR | 4:45 PM | AST | UTC-04:00 | None |
How to use the US time zone map
- 1Pick a city or search a place
Choose one of 20 US cities or search a place to snap to the nearest zone.
- 2Read the live local time
Each clock updates live from your browser's time zone data.
- 3Check Daylight Saving status
See each zone's UTC offset and whether DST is in effect today.
How many time zones are in the US?
Federal law divides the United States and its territories into nine standard time zones, defined by the Department of Transportation in 49 CFR Part 71. Most people only deal with four in the contiguous states (Eastern, Central, Mountain and Pacific), but Alaska, Hawaii-Aleutian, Atlantic, Samoa and Chamorro time round out the list.
The live map above places a reference city in every zone and shows its current local time, UTC offset and daylight saving state. These values come from the IANA time zone database in your browser, so they update when governments change the rules. Click any marker, or search a place, to see what time it is there right now.
Need the zone at one exact spot, such as a house near a boundary? Use the point-based time zone lookup, which also reports the distance to the nearest zone line. To compare against places outside the US, open the world time zone map.
US time zones and UTC offsets
Statutory US Time Zones
Standard offsets from UTC and where each zone applies.
| Zone | Abbreviation | Standard | Daylight | Where |
|---|---|---|---|---|
| Atlantic | AST | UTC-4 | None | Puerto Rico, US Virgin Islands |
| Eastern | EST / EDT | UTC-5 | UTC-4 | New York, Florida, Georgia, Ohio, most of Michigan and Indiana |
| Central | CST / CDT | UTC-6 | UTC-5 | Texas (most), Illinois, Louisiana, Minnesota, Wisconsin, Alabama |
| Mountain | MST / MDT | UTC-7 | UTC-6 | Colorado, Utah, New Mexico, Montana, Wyoming; Arizona stays on MST all year |
| Pacific | PST / PDT | UTC-8 | UTC-7 | California, Washington, Nevada, most of Oregon |
| Alaska | AKST / AKDT | UTC-9 | UTC-8 | Most of Alaska |
| Hawaii-Aleutian | HST / HDT | UTC-10 | Hawaii: none | Hawaii (no DST); western Aleutian Islands (DST observed) |
| Samoa | SST | UTC-11 | None | American Samoa |
| Chamorro | ChST | UTC+10 | None | Guam, Northern Mariana Islands |
Which states have two time zones?
Thirteen states sit in more than one time zone: Alaska, Florida, Idaho, Indiana, Kansas, Kentucky, Michigan, Nebraska, North Dakota, Oregon, South Dakota, Tennessee and Texas. In most of them the dividing line follows a county boundary, which is why a single city can be in a different zone from a town 20 miles away.
A few counties are cut by the line itself. Our original research catalogs them in the multi-time-zone counties study, and the guide to how time zone boundaries work explains who can move a boundary and how.
Daylight saving time rules and exceptions in the US
Under the Uniform Time Act as amended by the Energy Policy Act of 2005, Daylight Saving Time begins on the second Sunday in March and ends on the first Sunday in November, with clocks changing at 2:00 a.m. local time. States may opt out of DST but cannot adopt permanent DST without an act of Congress.
- Arizona stays on Mountain Standard Time all year, except the Navajo Nation, which follows DST. The Hopi Reservation, surrounded by Navajo land, does not.
- Hawaii never changes its clocks.
- Territories (Puerto Rico, US Virgin Islands, Guam, Northern Mariana Islands, American Samoa) do not observe DST.
Because the map computes DST live, the table above shows which listed cities are on daylight time today. To plan a call across many cities at once, try the time difference calculator.
How to convert time between US time zones
Local Time(B) = Local Time(A) + (Offset(B) - Offset(A))- Difference = (-4) - (-7) = +3 hours
- 9:00 a.m. + 3 h = 12:00 p.m.
Both cities are on daylight time, so the gap stays three hours all year. It would only change if one place skips DST, as Phoenix does.
How accurate is this US time zone map?
- Markers are reference cities. Clicking the map selects the nearest listed city, not the legal zone at that exact spot.
- The map does not draw time zone boundary lines. For a boundary-aware answer use the point lookup tool.
- Clock values depend on the time zone data shipped with your browser; very old browsers may lag recent rule changes.
- Time zone rules can change by law. Verify critical legal or aviation timings against official sources.
Quick facts about the US time zone map
| Fact | Value | Notes |
|---|---|---|
| Standard US Time Zones | 9 | Atlantic, Eastern, Central, Mountain, Pacific, Alaska, Hawaii-Aleutian, Samoa, Chamorro |
| Contiguous US Zones | 4 | Eastern, Central, Mountain and Pacific |
| DST Start | 2nd Sunday in March | Clocks move forward at 2:00 a.m. local time |
| DST End | 1st Sunday in November | Clocks move back at 2:00 a.m. local time |
| Zones Without DST | Hawaii, most of Arizona, territories | Navajo Nation in Arizona does observe DST |
| Legal Authority | US Department of Transportation | 49 CFR Part 71 defines the boundaries |
Edge cases and exceptions
Arizona Without DST
Most of Arizona stays on Mountain Standard Time all year, so in summer it matches Pacific Daylight Time and in winter it matches Mountain Time.
States Split by a Time Zone Line
Thirteen states have more than one zone, including Texas (El Paso is Mountain), Florida (the western panhandle is Central) and Indiana, Kentucky, Tennessee, Michigan and Nebraska.
Aleutian Islands
Most of Alaska is on Alaska Time, but the western Aleutian Islands use Hawaii-Aleutian Time and observe daylight saving time.
The US time zone map: worked examples
Schedule a Call From Seattle to Atlanta
Scenario: A 9:00 a.m. Pacific meeting in July with a colleague in Georgia.
Outcome: Atlanta is three hours ahead, so the meeting is at 12:00 p.m. Eastern Daylight Time.
Phoenix Compared With Denver
Scenario: Checking the gap in January and in July.
Outcome: Phoenix and Denver are the same time in winter, but Phoenix is an hour behind Denver in summer because Denver changes its clocks.
Frequently asked questions about the US time zone map
How many time zones are in the United States?
Federal law defines nine standard time zones. Four cover the contiguous states: Eastern, Central, Mountain and Pacific. The others serve Alaska, Hawaii and the Aleutians, Puerto Rico and the Virgin Islands, American Samoa, and Guam and the Northern Marianas.
What time is it in each US time zone right now?
The table and map above show the live local time for 20 reference cities in west-to-east order. They update every 15 seconds from the time zone data in your browser.
Which US states are in two time zones?
Alaska, Florida, Idaho, Indiana, Kansas, Kentucky, Michigan, Nebraska, North Dakota, Oregon, South Dakota, Tennessee and Texas. In each, a county line or river generally marks the boundary.
When does Daylight Saving Time start and end in the US?
It starts on the second Sunday in March and ends on the first Sunday in November, with clocks changing at 2:00 a.m. local time.
Which US states do not observe Daylight Saving Time?
Hawaii and most of Arizona, which stay on standard time all year. The Navajo Nation, in northeastern Arizona, does observe DST. US territories such as Puerto Rico and Guam do not observe DST either.
What is the difference between EST and EDT?
EST is Eastern Standard Time (UTC-5), used in winter. EDT is Eastern Daylight Time (UTC-4), used in summer. The same pattern applies to CST/CDT, MST/MDT and PST/PDT.
Is this a map of time zone boundaries?
No. It shows reference cities, not boundary lines. Clicking the map picks the nearest listed city. To find the exact zone at one address, use the time zone lookup tool, which also reports the distance to the nearest boundary.
How do I find the time zone of my exact location?
Use the "What Time Zone Am I In?" tool, which reads your GPS location or an address and shows the zone and local time.
What is the biggest time difference within the US?
Between the Atlantic zone (UTC-4) and Hawaii (UTC-10) it is six hours; including Guam (UTC+10) and American Samoa (UTC-11) it is up to 21 hours.
Which US time zone has the most people?
Eastern Time, which covers about 47 percent of the population, followed by Central and Pacific.
Where do these times come from?
They are computed in your browser from the IANA time zone database through the Intl API. Governments change the rules from time to time, and browsers update their copies of the database.
Keep exploring
What to do with this result
- What Time Zone Am I In?Use this to check your current time zone.
- Time Zone Finder: Time Zone of Any City or AddressUse this to look up the time zone of any city or address.
- World Time Zone MapUse this to view the world time zone map.
- Time Difference Calculator Between CitiesUse this to calculate the time difference between cities.
- Interactive US County Map (All 3,143 Counties)Use this to explore the interactive US county map.
Related map tools
Guides, studies & methodology
Printable blank maps
- Printable blank map libraryWorld, continent, US and state outline maps (PDF/PNG/SVG).
- Blank map: United States All Counties MapFree printable outline map.
- Blank map: United States with State BordersFree printable outline map.
- Blank map: United States with State CapitalsFree printable outline map.
- Blank map: United States OutlineFree printable outline map.
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