Definition of URL for English Language Learners. computers : the letters and symbols (such as http://www.Merriam-Webster.com) that are the address of a Web site.
The Uniform Time Act of 1966 provided standardization in the dates of beginning and end of daylight time in the U.S. but allowed for local exemptions from its observance. The act provided that daylight time begin on the last Sunday in April and end on the last Sunday in October, with the changeover to occur at 2 a.m. local time. During the energy crisis years, Congress enacted earlier starting dates for daylight time. In 1974, daylight time began on 6 January and in 1975 it began on 23 February. After those two years the starting date reverted to the last Sunday in April. In 1986, a law was passed that shifted the starting date of daylight time to the first Sunday in April, beginning in 1987.
Daylight saving begins at 2 a.m. for many good reasons, such as most people are at home in bed. Credit: Clock image via Shutterstock | T.W. View full size image. Few people will likely wake up exactly at 2:00 a.m. local time to move the clock hand, or dial, forward an hour. But that's when daylight saving time officially begins on the second Sunday in March. It ends on the first Sunday in November, when clocks are turned back at 2:00 a.m. local time to read 1:00 a.m. That is, for everyone except those who live in Hawaii, American Samoa, Guam, Puerto Rico, the Virgin Islands, and by most of Arizona, with the exception of the Navajo Nation.