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  2. Timekeeping on Mars - Wikipedia

    en.wikipedia.org/wiki/Timekeeping_on_Mars

    Although possibly the first to make the mistake of describing the Martian year as lasting 687 Martian days, he was far from the last. [39] In the Robert A. Heinlein novel Red Planet (1949), humans living on Mars use a 24-month calendar, alternating between familiar Earth months and newly created months such as Ceres and Zeus. For example, Ceres ...

  3. Mars sol - Wikipedia

    en.wikipedia.org/wiki/Mars_sol

    A Martian year is approximately 668.6 sols, equivalent to approximately 687 Earth days [1] or 1.88 Earth years. The sol was adopted in 1976 during the Viking Lander missions and is a measure of time mainly used by NASA when, for example, scheduling the use of a Mars rover .

  4. 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).

  5. Talk:Timekeeping on Mars - Wikipedia

    en.wikipedia.org/wiki/Talk:Timekeeping_on_Mars

    Like something where you can put in Earth notation {{Earth to Mars Time|years|months|days}} and get it to spit out "2 Martian years and 78 sols" on the page. Yes, I know it's like going to the auto industry and saying "Hey, let's make a car that gets 200 miles to the gallon" - it's easy to say, and sounds simple; but it isn't - but I'm just ...

  6. Mars cycler - Wikipedia

    en.wikipedia.org/wiki/Mars_cycler

    A Martian year is 1.8808 Earth years, so Mars makes eight orbits of the Sun in about the same time as Earth makes 15. Cycler trajectories between Earth and Mars occur in whole-number multiples of the synodic period between the two planets, which is about 2.135 Earth years. [ 3 ]

  7. Climate of Mars - Wikipedia

    en.wikipedia.org/wiki/Climate_of_Mars

    [clarification needed] Mars Orbiter Camera data beginning in March 1999 and covering 2.5 Martian years [14] show that Martian weather tends to be more repeatable and hence more predictable than that of Earth. If an event occurs at a particular time of year in one year, the available data (sparse as it is) indicates that it is fairly likely to ...

  8. Solar longitude - Wikipedia

    en.wikipedia.org/wiki/Solar_longitude

    Solar longitude, commonly abbreviated as Ls, is the ecliptic longitude of the Sun, i.e. the position of the Sun on the celestial sphere along the ecliptic.It is also an effective measure of the position of the Earth (or any other Sun-orbiting body) in its orbit around the Sun, [1] usually taken as zero at the moment of the vernal equinox. [2]

  9. Orbit of Mars - Wikipedia

    en.wikipedia.org/wiki/Orbit_of_Mars

    Mars comes closer to Earth more than any other planet save Venus at its nearest—56 million km is the closest distance between Mars and Earth, whereas the closest Venus comes to Earth is 40 million km. Mars comes closest to Earth every other year, around the time of its opposition, when Earth is sweeping between the Sun and Mars. Extra-close ...