Daylight saving time became a national standard in 1966 when President Lyndon B. Johnson signed the Uniform Time Act, which was established as a way to continue to conserve energy. The thinking was if it's light out longer, that's less time you'll need to use the lights in your house.

Millions of Americans in 48 states will set their clocks one hour ahead next weekend, launching nearly eight months of longer evening daylight during the spring and summer months. The price? Losing an hour of sleep.

In March, millions of Americans turn their clocks forward, marking the start of daylight saving time in 2025. The controversial practice of "springing forward" and "falling back" has been observed in most states for decades.