During this time the clock is
advanced one hour.
Most countries in the Northern Hemisphere have a daylight savings time from
spring to fall.
("Spring forward and Fall back".)
Many countries in the Souther Hemisphere have daylight saving time from
October to March, and most countries near the equater stay on standard time.
Countries in the European Union begin the "summertime period" on the last Sunday
in March and end on the last Sunday in October, with both the beginning and ending
at 1am UTC so that all time zones in the European Union change at once.
Great Britain first introduced daylight savings time in 1916 to conserve
fuel and light for the war effort.
United States begins the first Sunday in April and ends the last
Sunday in October.
The US updates its clocks
at 2 am according to the local time zones.
States have the ability to exempt themselves.
The first Daylight Saving Time in the United States was on March 31, 1918.
Daylight to Dominical
