U.S. time zones at a glance
The continental United States has four main time zones: Eastern (New York, Miami, Atlanta), Central (Chicago, Houston, Dallas), Mountain (Denver, Phoenix, Salt Lake City) and Pacific (Los Angeles, Seattle, Las Vegas). Alaska and Hawaii have their own time zones, and Puerto Rico uses Atlantic Time.
- When it is noon in New York, it is 11 AM in Chicago, 10 AM in Denver and 9 AM in Los Angeles.
- Most of the country moves clocks forward one hour on the second Sunday in March and back one hour on the first Sunday in November (daylight saving time).
- Arizona (except the Navajo Nation) and Hawaii do not change their clocks, so their difference from other states changes during the year.
How to use the time zone converter
Choose the place where the time is set, pick the date and time, and the table shows the same moment in your own time, in every U.S. time zone and in the places you added to My clocks. It is handy for scheduling a video call with family abroad, a meeting with an overseas client or the start of a live event.
Calling family overseas
East and Southeast Asia are 11 to 17 hours ahead of the U.S. mainland, so evenings in the U.S. are mornings of the next day in Vietnam, the Philippines or China. Add the places you call most to My clocks and this page will remember them on this device. The places you choose are not sent to us.
Stock market hours around the world
The New York Stock Exchange and Nasdaq trade from 9:30 AM to 4:00 PM Eastern Time on weekdays. Asian markets trade while it is night in the U.S., and European markets open in the early U.S. morning. The table above converts each exchange's regular hours into your time and shows whether it is open now. Several Asian exchanges also close for lunch.
Frequently asked questions
How many time zones does the U.S. have?
Six time zones cover the 50 states: Eastern, Central, Mountain, Pacific, Alaska and Hawaii-Aleutian. Counting territories such as Puerto Rico, Guam and American Samoa, there are nine.
When does daylight saving time start and end?
In most of the U.S., clocks go forward one hour at 2:00 AM on the second Sunday in March and back one hour at 2:00 AM on the first Sunday in November. Many other countries, including Vietnam, the Philippines, China and Mexico, do not use daylight saving time at all.
Is the time on this page accurate?
The clocks use your device's clock and the official world time zone database built into your browser, so they are as accurate as your device's time and switch to daylight saving time automatically.