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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. A sol is slightly longer than an Earth day.
Numerically, the Mars Sol Date is defined as MSD = (Julian Date using International Atomic Time − 2451549.5 + k)/1.02749125 + 44796.0, where k is a small correction of approximately 1 ⁄ 4000 day (22 s) due to uncertainty in the exact geographical position of the prime meridian at Airy-0 crater.
The basic time periods from which the calendar is constructed are the Martian solar day (sometimes called a sol) and the Martian vernal equinox year.The sol is 39 minutes 35.244 seconds longer than the Terrestrial solar day, and the Martian vernal equinox year is 668.5907 sols in length (which corresponds to 686.9711 days on Earth).
NASA’s Perseverance Mars rover used its right-front navigation camera to capture this first view over the rim of Jezero Crater on Dec. 10, 2024, the 1,354th Martian day, or sol, of the mission.
The temperature variations between spring and summer are much less than the very sharp variations that occur within a single Martian sol (solar day). On a daily basis, temperatures peak at local solar noon and reach a minimum at local midnight. This is similar to the effect in Earth's deserts, only much more pronounced.
The shortest day of the year will see an early sunset at 3:51pm. ... The word “solstice” derives from sol, the Latin word for sun, and sistere, which means “to come to a stop or make stand”.
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The 10,000 steps per day rule isn’t based in science. Here’s what experts have to say about how much you should actually walk per day for maximum benefits. 10,000 Steps Per Day Is A Myth—So ...