Global Astronomers Rally for Creation of a Moon-Specific Timekeeping Standard

Time on the moon moves slightly faster than on Earth. An international group of astronomers is advocating for a dedicated lunar clock to help future space missions keep accurate time on the moon.

The International Astronomical Union (IAU) voted on Thursday, encouraging global space organisations to collaborate on a standardised timekeeping system for the moon, where one day lasts 29.5 Earth days.

Lunar Timekeeping Initiative

"That's the crux of our resolution: to work together to establish this standard time," said Susan Stewart from the US Naval Observatory during the group's conference in Cape Town, South Africa. Stewart was instrumental in proposing this resolution.

The moon's lower gravity causes time to pass about 58.7 microseconds faster each day compared to Earth. With more countries and private companies planning lunar missions, astronomers aim to ensure synchrony with a unified clock.

Global Collaboration Efforts

Currently, lunar missions operate on the time zone of the nation controlling the spacecraft. The European Space Agency (ESA) advocated last year for creating a lunar clock. Earlier this year, the White House directed NASA and other agencies to develop an initial concept by year's end, with a final plan due by 2026.

Astronomers are still in the early stages of determining how lunar time will function, according to Bijunath Patla, a physicist at the National Institute of Standards and Technology. "I think that the community has realised that this needs to be done," Patla said. "And this is the beginning."

As more entities set their sights on lunar exploration, establishing a standardised lunar timekeeping system becomes increasingly crucial for mission coordination and success.