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Reference.org
Timekeeping on the Moon
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<p>Timekeeping on the Moon is an issue of synchronized human activity on the <a href="/facts/Moon/zKHqEMPb">Moon</a> and contact with such. The two main differences to timekeeping on Earth are the length of a day on the Moon, being the <a href="/facts/Lunar_day/3pBDba0z">lunar day</a> or <a href="/facts/Lunar_month/2l4tadsA">lunar month</a>, observable from Earth as the <a href="/facts/Lunar_phases/0JalCYrE">lunar phases</a>, and the rate at which time progresses, with 24 hours on the Moon being 58.7 <a href="/facts/Orders_of_magnitude_(time)/bEovB6Tp">microseconds</a> (0.0000587 seconds) faster, resulting from <a href="/facts/Gravitational_time_dilation/z4XG7SYA">gravitational time dilation</a> due to the different masses of the Moon and Earth. </p>