Most Americans will set clocks forward this weekend for daylight saving time. Originating from WWI efforts to save energy, this practice offers more evening sunlight but has sparked debates and ...

On Tuesday, the clock was set at 89 seconds to midnight — the closest the world has ever been to that marker, according to the Bulletin of the Atomic Scientists, which established the clock in 1947.

During the Cold War in 1991, the clock was set 17 minutes from midnight—the farthest it has ever been. Conversely, 2025's setting at 89 seconds to midnight marks its closest approach.

Most Americans will set their clocks 60 minutes later before heading to bed Saturday night, but daylight saving time officially starts Sunday at 2 a.m. local time.