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Timekeeping on Mars. (In red) Martian season lengths and time as compared to seasons on Earth (in blue), with marks for the vernal equinox, perihelion, and aphelion. Though no standard exists, numerous calendars and other timekeeping approaches have been proposed for the planet Mars.
Mars' Calendar. Time on Mars is easily divided into days based on its rotation rate and years based on its orbit. Sols, or Martian solar days, are only 39 minutes and 35 seconds longer than Earth days, and there are 668 sols (687 Earth days) in a Martian year.
Most people seem content to say "year" both for Earth and for Mars (and they may clarify by saying "Martian year," "Mars year," "M-year," or something else). One thing that makes calendars hard (even on Earth) is that the year is not made up of an exact number of days.
26 sty 2015 · From the Wikipedia page on Martian timekeeping: The term sol is used by planetary astronomers to refer to the duration of a solar day on Mars. A mean Martian solar day, or "sol", is 24 hours, 39 minutes, and 35.244 seconds. “Sol” is often used as a direct replacement for “Day” when concerning Mars.
1 gru 2005 · Choosing the point in Mars’ orbit for beginning the calendar year, selecting the specific revolution for the epoch, and defining the epochal year as either 0 or 1, establish a minimum solution to the problem of the Martian date system.
Many of the calendar proposals have considered intercalation for the current Martian year. However, most do not adequately address the evolution of the length of the year over time. Any useable civil or scientific calendar must periodically adjust its intercalation pattern to compensate for this continuous change.
17 maj 2023 · A Martian year, also known as a "Martian solar year," is the length of time it takes Mars to complete one orbit around the Sun. Compared to Earth's 365.25 days, a Martian year is much longer, lasting for approximately 687 Earth days.
