ATLANTA — Daylight Saving Time will kick in Sunday morning -- though for Saturday night owls and many bar-and-club goers, it'll happen before they've actually gone to sleep.
The time it takes effect is technically 2 a.m., but what that means is if you pull out your phone (or glance at your watch) at 1:59 a.m. and stare long enough for the minute to change over, it'll skip right to 3 a.m.
No 2:01 a.m., no 2:02 a.m., no 2:03 a.m. and, well, you get the idea.
The most practical concern for late-nighters is if your favorite bar or club or late-night food joint will close at its normal time and lose an hour of business or stay open an "extra" hour after the jump-ahead takes effect. Make sure to check ahead!
More on Daylight Saving Time
The practice has been implemented in some form since World War I when Germany originally introduced it to conserve power and energy by extending daylight hours.
The Standard Time Act in 1918 was the first introduction of daylight saving time to American clocks. What was then a temporary measure, held the nickname 'war time,' and lasted from spring to fall in an attempt to cut energy costs during World War I. The act is also responsible for the five time zones still in place today.
The Department of Transportation was created and given regulatory power over time zones and daylight saving time in 1966. In order to correct confusing and alternating time zones, the Uniform Time Act of 1966 sought a nationwide standard for daylight saving time — from the last Sunday in April to the last Sunday in October.
Few changes have happened since then. Most recently, daylight saving time was extended by a few weeks in 2005 when former President George W. Bush changed the law. It is now observed from the second Sunday in March until the first Sunday in November.
Despite the national observance, Arizona and Hawaii don't observe daylight saving time. Under federal law, states are allowed to opt out of daylight saving time and remain on standard time but are not allowed to remain on daylight time.
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