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  2. Timekeeping on Mars - Wikipedia

    en.wikipedia.org/wiki/Timekeeping_on_Mars

    Definition of year and seasons. The length of time for Mars to complete one orbit around the Sun in respect to the stars, its sidereal year, is about 686.98 Earth solar days (≈ 1.88 Earth years), or 668.5991 sols. Because of the eccentricity of Mars' orbit, the seasons are not of equal length.

  3. Mars sol - Wikipedia

    en.wikipedia.org/wiki/Mars_sol

    The average duration of the day-night cycle on Mars — i.e., a Martian day — is 24 hours, 39 minutes and 35.244 seconds, [3] equivalent to 1.02749125 Earth days. [4] The sidereal rotational period of Mars—its rotation compared to the fixed stars—is 24 hours, 37 minutes and 22.66 seconds. [4]

  4. Mars - Wikipedia

    en.wikipedia.org/wiki/Mars

    The solar day (or sol) on Mars is only slightly longer than an Earth day: 24 hours, 39 minutes, and 35.244 seconds. [185] A Martian year is equal to 1.8809 Earth years, or 1 year, 320 days, and 18.2 hours. [2] The gravitational potential difference and thus the delta-v needed to transfer between Mars and Earth is the second lowest for Earth ...

  5. Darian calendar - Wikipedia

    en.wikipedia.org/wiki/Darian_calendar

    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).

  6. Orbital period - Wikipedia

    en.wikipedia.org/wiki/Orbital_period

    The anomalistic period is the time that elapses between two ... Jupiter has a synodic period of 398.8 days from Earth; ... Earth: 1: 365.25636 solar daysMars: 1. ...

  7. Mars is rotating more quickly, NASA mission finds - AOL

    www.aol.com/news/mars-rotating-more-quickly-nasa...

    The instruments were used to track Mars’ rotation during the mission’s first 900 days on the planet. ... longer than a day on Earth. ... station like InSight onto Mars for a long time, and ...

  8. Rotation period (astronomy) - Wikipedia

    en.wikipedia.org/wiki/Rotation_period_(astronomy)

    Rotation period (astronomy) In astronomy, the rotation period or spin period[1] of a celestial object (e.g., star, planet, moon, asteroid) has two definitions. The first one corresponds to the sidereal rotation period (or sidereal day), i.e., the time that the object takes to complete a full rotation around its axis relative to the background ...

  9. Kepler's laws of planetary motion - Wikipedia

    en.wikipedia.org/wiki/Kepler's_laws_of_planetary...

    The red ray rotates at a constant angular velocity and with the same orbital time period as ... Period (days) (10-6 AU 3 /day 2) ... 7.496 Earth 1 365.2564 7.496 Mars ...