History In The Headlines

Category: Time

leap second

A Very Short History of the Leap Second

For the 26th time since 1972, a leap second will be added to the clock to compensate for the Earth’s slowing rotation. But will it be history’s last?

Daylight Saving Time

8 Things You May Not Know About Daylight Saving Time

Explore surprising facts about daylight saving time, which goes into effect early Sunday in most U.S. regions.