USA Time Zones and Clock Changes
United States of America Main Facts
Local Time and Daylight Saving Time (DST) Rules
The United States of America , also referred to as the United States , the U.S. , the USA , America , and the States (colloquially), is a federal republic of 50 states, located primarily in central North America.
The United States has land borders with Canada and Mexico and territorial water boundaries with Canada, Russia and the Bahamas. The USA is otherwise bounded by the Pacific Ocean, the Bering Sea, the Arctic Ocean, the Atlantic Ocean, the Gulf of Mexico and the Caribbean Sea.
Forty-eight of the states, "the continental" or "contiguous 48 states" are located in a single region between Canada and Mexico. The other two are Alaska and the archipelago of Hawaii.
There is a federal district, the District of Columbia named 'Columbia' for the old poetic name for the country, comprising the capital, Washington, D.C . The United States also has a number of overseas territories.
- Daylight saving start: Sunday 12 March 2017 02:00 local time. Clocks go forward one hour.
- Daylight saving end: Sunday 5 November 2017 02:00 local time. Clocks go back one hour.
USA and Canada past and future DST schedules here
Click here for an alternative view of current local time and GMT offsets in all six time zones or to select any place of your choice.
Official Reference: UNITED STATES CODE, TITLE 15 - COMMERCE AND TRADE, CHAPTER 6 - WEIGHTS AND MEASURES AND STANDARD TIME, SUBCHAPTER IX - STANDARD TIME