Officially, at 2 a.m. Sunday, clocks should “spring forward” and declare that it’s 3 a.m. – but most people take care of this before hitting the hay Saturday, so they can curse their alarm clocks before the sun comes up.

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Daylight Savings Time, also referred to as “summertime,” is the practice of temporarily advancing clocks so afternoons have more daylight and mornings have less.

Thus the “spring forward” that preys on the already sleep-deprived and the “fall back” that gives revelers an extra hour before curfew during college football season.

Ah, memories.

The practice of changing the clocks is said to benefit golfers and retailers, who enjoy additional customers before the cloak of darkness. On the flip side, it isn’t really great for evening entertainment and farming.

Invented by New Zealand entomologist (who collected bugs for fun) in 1895, the law wasn’t codified until 1916 when Germany and its’ World War I allies adopted the practice to conserve coal during wartime.

In the United States, it was also adopted during WWI to conserve fuel, then suspended until it was put into effect during WWII. In 1966 the Uniform Time Act was passed, outlining the basic framework, which was thrown out the window in 1973, when Daylight Savings Time was observed all year. The standardized time shift we now observe – turning clocks forward an hour on the second Sunday in March and back an hour on the first Sunday in November – was standardized in 1986.

Well, except in Hawai’i and Arizona. They don’t observe Daylight Savings Time.

But for everyone else – make sure to change those clocks Saturday night!