Is daylight saving time permanent or ending in 2026? Here's when and what to know about the spring forward time change.

As U.S. clocks shift forward this weekend, many earthlings will find themselves momentarily confused about what time it is. But scientists say a far larger temporal problem is looming on the horizon: ...

The practice of adding ‘leap seconds’ to official clocks to keep them in sync with Earth’s rotation will be put on hold from 2035, the world’s foremost metrology body has decided. The decision was ...

Universal Time (UT), adopted in 1928 by the International Astronomical Union, is the time standard used in astronomical almanacs, referencing the 0° longitude meridian (Greenwich). For high precision, ...

The moon could soon get its own time zone. The White House is directing NASA to work with other government agencies to develop a lunar-based time system called Coordinated Lunar Time, abbreviated as ...

Climate change may be making it harder to know exactly what time it is. The rapid melting of the ice sheets atop Greenland and Antarctica, as measured by satellite-based gravitational measurements, is ...

This week, the White House officially tasked NASA with establishing a time standard for the moon, called Coordinated Lunar Time (LTC) in the Office of the President’s memorandum, which international ...