Daylight Saving Time in the U.S. ends the first Sunday in November at 2:00am, except in Arizona, American Samoa, Guam, Puerto Rico, the Virgin Islands, the Commonwealth of Northern Mariana Islands, and Hawaii. The Navajo Nation participates in Daylight Saving Time, even in Arizona, due to its large size and location in three states. Clocks move back 1 hour.
Some U.S. states have proposed, and even voted to implement, a permanent Daylight Saving Time. But while federal law allows states to exempt themselves from daylight saving time , as Arizona and Hawaii do, nothing in federal law allows them to exempt themselves from standard time.
Summer Time Ends
Beginning in 2007, most of the United States began starting Daylight Saving Time on the second Sunday in March and reverted to standard time on the first Sunday in November.
In the U.S., each time zone switches at a different time.
In the European Union, Summer Time began the last Sunday in March and ends the last Sunday in October.
In the EU, all time zones change at the same moment..
The Rest of the World
Approximately 70 countries utilize Daylight Saving Time, and for many of them it ends for the year on the last Sunday in October. Other countries include Canada, Mexico, St. Johns, Bahamas, Turks and Caicos, Cuba, U.K, Lebanon, Kirgizstan, and Australia.
Beginning in March of 2011, Russia is on perpetual Daylight Saving Time. Its clocks are not being reset to standard time in the autumn.
Japan, India, and China are the only major industrialized countries that do not observe some form of daylight saving.
Most countries in the tropics, or near the equator, do not observe Daylight Saving Time because their daylight hours are similar during every season. There is no visible advantage to moving clocks forward during the summer.
Whose Time Is It?
There are many oddities in the use of Daylight Saving.
Some parts of the U.S. and Canada do not observe Daylight Saving Time at all, such as the state of Arizona and the province Saskatchewan. Observances can be erratic.
Chile delayed its changeover date for the Pope's visit in 1987, and a presidential inauguration in 1990.
In Japan, Daylight saving was introduced after World War II by the U.S. occupation but was dispensed with in 1952, following opposition from farmers.
