Fact #175
Strange but true
Clocks on the Moon run about 56 microseconds a day fast, so the White House told NASA in 2024 to define a separate standard called Coordinated Lunar Time.
Weaker gravity makes time pass fractionally quicker, exactly as general relativity says. Fifty-six microseconds sounds like nothing until you try to land something by satellite navigation: light travels seventeen kilometres in that time, and the error accumulates every day. The deadline for a working standard is the end of 2026.
Source: US Office of Science and Technology Policy, Celestial Time Standardization Policy, 2 April 2024 · checked Sep 2026