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Daylight Saving Time (DST)

Since 1966, most of the United States has observed Daylight Saving Time from at 2:00am on the first Sunday of April to 2:00am on the last Sunday of October.

Beginning in 2007, most of the US will begin Daylight Saving Time at 2:00am on the second Sunday in March and revert to standard time on the first Sunday in November.

In the US, each time zone switches at a different time.

Date Change From 2007

On August 8, 2005, President George W. Bush signed the Energy Policy Act of 2005. This Act changed the time change dates for Daylight Saving Time in the US.

Beginning in 2007, DST will begin on the second Sunday in March and end the first Sunday in November. The Secretary of Energy will report the impact of this change to Congress who retain the right to resume the 2005 Daylight Saving Time schedule once the Department of Energy study is complete.

Tensor Time Systems Inc provide time and attendance systems and software, which updates automatically in response to changes in Daylight Saving Time.

Exemptions To Daylight Saving Time

Daylight Saving Time is not observed in certain US states and territories. These include Hawaii, American Samoa, Guam, Puerto Rico, the Virgin Islands, and Arizona, however the Navajo Nation does participate in the Daylight Saving Time policy, even in Arizona, due to its large size and location in three states.

A Safety Reminder

Many fire departments across the United States encourage people to change the batteries in their smoke detectors when they change their clocks because Daylight Saving Time provides a convenient reminder. "A working smoke detector more than doubles a person's chances of surviving a home fire," says William McNabb of the Troy Fire Department in Michigan.

More than 90 percent of homes in the United States have smoke detectors, but one-third are estimated to have dead or missing batteries.