Daylight saving time is almost here. And while it means longer days, it also means less sleep. Here's what to know.

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.

It's almost daylight saving time, where we all turn the hands of our clocks forward one hour. Daylight saving didn't become federal law until 1966, with passage of the Uniform Time Act . It established daylight saving time from the last Sunday of April through the last Sunday of October.