There are several sure indications that another cold winter is coming to a close and spring is on the way. Weeks before the spring equinox arrives on March 20, the air starts getting warmer, days become longer and there are new signs of life in plants and animals.

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

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.