Humans will return to the moon and build their first base there through the Artemis Mission. Because the moon will again be a temporary stopover, a specific time standard for the moon will be developed by NASA with the help of their allies.
The White House has directed NASA to begin developing a Coordinated Lunar Time (LTC) standard that would require an atomic clock to be placed on the lunar surface. A day on the moon is 56 microseconds shorter than on earth. Therefore a separate time standard is needed to ensure that the GPS, rocket, and communication systems on the moon are in sync to avoid any issues.
The LTC will require the agreement of 36 countries that signed the Artemis Agreement which was agreed in 2020. The surface of the moon will be a stepping stone for humans to start exploring Mars and then start living on planets other than Earth from time immemorial. The Artemis mission will be the first time humans have returned to the moon since 1972. In addition to the United States, Japan, India, Russia and China also want to send astronauts to the surface instead.