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Sol (borrowed from the Latin word for sun) is a solar day on Mars; that is, a Mars-day. A sol is the apparent interval between two successive returns of the Sun to the same meridian (sundial time) as seen by an observer on Mars. It is one of several units for timekeeping on Mars.
Measurement & Science
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mars sol day time earth nasa lander seconds martian two minutes days approximately timekeeping one 24 hours 39 sols use
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