The United States spans 9 time zones, with 4 main time zones, Pacific / Mountain / Central / Eastern.
More info. | US largest map
China spans 1 time zone, UTC +8h all year round, without summer time, corresponding to the meridian 82.5 east of Greenwich located between Shanghai and Beijing approx. More info. | Asia time zone map
US Daylight Saving Time 2025 
On Sunday, March 9, the United States turns the clock forward one hour, at 2:00 am it will be 3:00 am More info
China does not use daylight saving time 
All year round it uses the UTC +8h time zone. More info
You can quickly check the current time difference between the US and China by viewing the current time zone at the top right of both countries. time zone clocks 
. clock symbols info
You can also refer to the 4 Time Zone Colors 
= Intervals that are multiples of 4 hours between the same colors.
For example, between California and China, the time difference (in standard time) will be California, US 16 hours behind China. During US Daylight Saving Time we will subtract 1 hour = 15 hours.
The time in New York, United States is 13 hours behind China in standard time. During US Daylight Saving Time, from the Second Sunday March to First Sunday November, the time difference will be 12 hours from China.
Time change and 
time difference New York, USA vs. Beijing, China 
• As of (2nd Sunday in March) with the start of US daylight saving time, New York is -4h, and Beijing is +8h, so New York will be 12 hours behind Beijing.
• As of (1st Sunday in November) with the return to US standard time, New York is -5h and Beijing +8h, so New York will be 13 hours behind Beijing.
| Arizona | Texas |
|---|---|
| Arizona Time Zone -7 No daylight saving |
Texas Time Zone -6 Daylight saving -5 |
 Arizona no daylight saving time |
Texas daylight saving time |
| Arizona time difference with | Texas time difference with |
| Beijing, China | Beijing, China |
| Hong Kong, China | Hong Kong, China |
| Shanghai, China | Shanghai, China |
| Taipei, Taiwan | Taipei, Taiwan |
| Naypyidaw, Burma | Naypyidaw, Burma |
| Hanoi, Vietnam | Hanoi, Vietnam |
| Manila, Philippines | Manila, Philippines |
| Tokyo, Japan | Tokyo, Japan |
| vs. local time | vs. local time |
| Florida | Hawaii |
|---|---|
| Florida Time Zone -5 Daylight saving -4 |
Hawaii Time Zone -10 No daylight saving |
| Florida daylight saving time |
Hawaii no daylight saving time |
| Florida time difference with | Hawaii time difference with |
| Beijing, China | Beijing, China |
| Hong Kong, China | Hong Kong, China |
| Shanghai, China | Shanghai, China |
| Taipei, Taiwan | Taipei, Taiwan |
| Naypyidaw, Burma | Naypyidaw, Burma |
| Hanoi, Vietnam | Hanoi, Vietnam |
| Manila, Philippines | Manila, Philippines |
| Tokyo, Japan | Tokyo, Japan |
| vs. local time | vs. local time |
The Clock time is updated with the time change, along with the time zone and summer or winter symbols. + info.
Several states in the Eastern US (Central ← Eastern) and Central US (Mountain ← Central), have locations that use the contiguous states time zone. Eastern US States with Central Time |
|
| Central ← Eastern | US Eastern Time (*) |
|---|---|
| Pensacola ← FL | Florida* +info Miami  |
| Panama City ← FL | |
| Gary ← IN | Indiana* +info Indianapolis |
| Evansville ← IN | |
| Iron Mountain ← MI | Michigan* +info Detroit  |
| Menominee ← MI | |
| West Kentucky +info | East Kentucky +info |
| Bowling Green | Frankfort Louisville |
| Owensboro | Lexington |
| West Tennessee +inf | East Tennessee +info |
| Nashville |
Knoxville |
| Memphis | Chattanooga |
| Central US states with Mountain Time | |
| Mountain ← Central | US Central Time (*) |
|---|---|
| Goodland ← KS Syracuse ← KS |
Kansas* +info Topeka Wichita |
| Scottsbluff ← NE Alliance ← NE |
Nebraska* +info Lincoln Omaha |
| Bowman ← ND |
North Dakota* +info Bismarck Fargo |
| Dickinson ← ND | |
| Rapid City ← SD | South Dakota* +info Pierre Sioux Falls |
| Spearfish ← SD | |
| El Paso ← TX Hudspeth Cty ← TX |
Texas* +info Austin Houston |
| Pacific time zone | Mountain t. zone |
|---|---|
| Current Pacific Time | Current Mountain Time |
| Los Angeles (CA) | Denver (Colorado) |
| US Pacific Time Zone | US Mountain Time Z. |
| PST = standard -8h PDT = daylight -7h |
MST = standard -7h MDT = daylight -6h |
| *Shared time zones Pacific ⇄ Mountain | Arizona Mountain Time |
| Arizona Mountain T. | |
| Phoenix | |
| MST = standard -7h No daylight saving |
| Central time zone | Eastern time zone |
|---|---|
| Current Central Time | Current Eastern Time |
| Chicago (Illinois) | New York |
| US Central Time Zone | US Eastern Time Z. |
| CST = standard -6h CDT = daylight -5h |
EST = standard -5h EDT = daylight -4h |
| *Central US states with 2 time zones | *Eastern US states with 2 time zones |
| Alaska Time Zone | Hawaii Time Zone |
|---|---|
| Juneau |
Honolulu |
| Alaska Time Zone | Hawaii Time Zone |
| AKST = standard -9h AKDT = daylight -8h |
HST = std -10h No daylight saving |
| Atlantic time zone |
|---|
| Puerto Rico |
| US Virgin Islands |
| AST = standard -4h No daylight saving |
| American Samoa time |
|---|
| American Samoa |
| Pago Pago |
| SST = standard -11h No daylight saving |
| Chamorro time zone |
|---|
| Guam |
| Northern Mariana Islands |
| ChST = standard +10h No daylight saving |
The US spans 4 main time zones, from west to east: Pacific Time - Mountain Time - Central Time - Eastern Time.
2 non-contiguous time zones: Alaska Time and Hawaii Islands Time, and 3 US dependencies which none of them use daylight saving time.
* There are 2 more time zones corresponding to US Minor Outlying Islands. more info on wiki
The letters S (standard) and D (daylight), are the acronyms that show the current period of the time zone.
For example, PST Pacific standard time / PDT Pacific daylight time, plus the symbols that appear next to the clock time
Daylight saving time in US begins on the second Sunday in March, at 2:00 a.m., moving the clock forward 1 hour and returning to winter or standard time on the first Sunday in November, at 2:00 a.m., turning the clock back 1 hour. 
US map.
| USA daylight saving time 2025 | |
Starts + 1h  |
Ends - 1h  |
| March-9 Sun. 2:00 → 3:00 |
Nov.-2 Sun. 2:00 → 1:00 |
| 2nd Sunday in March, at 2:00 a.m., US turns the clock forward 1 hour | 1st Sunday in November, at 2:00 a.m., US turns the clock back 1 hour |
| Pacific Time / Mountain Time / Central Time / Eastern Time | |
| China | Taiwan |
|---|---|
| China Time | Taiwan Time |
| Beijing, China | Taipei, Taiwan |
| Time Zone +8h. | Time Zone +8h. |
| CST = standard +8h No daylight saving |
CST = standard +8h No daylight saving |
| China standard time | China standard time |
| Myanmar (Burma) | Indochina |
| Burma Time | Vietnam Time |
| Naypyidaw, Burma | Hanoi, Vietnam |
| Time Zone +6:30h. | Time Zone +7h. |
| Standard Time +6:30 No daylight saving |
Standard Time +7h No daylight saving |
| Cambodia | Laos Thailand | Vietnam |
| Manila, Philippines | Tokyo, Japan |
| Philippines Time | Japan Time |
| Manila, Philippines | Tokyo, Japan |
| Time Zone +8h. | Time Zone +9h. |
| PST = standard +8h No daylight saving |
JST = standard +9h No daylight saving |
| Philippines standard time | Japan standard time |
| North Korea | Northern Mariana Isl. |
| Korea Time | N.Mariana Time |
| Pyongyang, N. Korea | Saipan, N.Mariana Isl. |
| South Korea | Guam |
| Seoul, South Korea | Hagåtña, Guam |
| Time Zone +9h. | Time Zone +10h. |
| KST = standard +9h No daylight saving |
ChST = standard +10h No daylight saving |
US-China maps. Capital Most populous city 
Capital of the country
Clocks symbols:
Daylight Saving Time. UTC standard time, or winter time. 
No Daylight Saving Time throughout the year. 24 hour clock format
Clocks and symbols (daylight saving - winter) are updated in real time as the time changes in different US-China time zones.
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