Spring marks many changes: warmer weather, longer days, blooming flowers—and, for many people around the world, the beginning of daylight saving time.

In the United States, however, there’s a growing push to do away with this particular rite of spring. A bipartisan group of lawmakers in the U.S. Congress has once again introduced a bill to make daylight saving time permanent. Known as the Sunshine Protection Act, the bill shocked the country when it passed in the Senate in 2022. Though it eventually died a slow death in the House of Representatives, the bill will now wend its way through the legislative process yet again.

But what exactly is daylight saving time, and when does it begin this year? Here’s