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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).
In each quarter there are three months of 42 sols and a fourth month of 41 sols. The pattern of seven-day weeks repeats over a two-year cycle, i.e., the calendar year always begins on a Sunday in odd-numbered years, thus effecting a perpetual calendar for Mars. [27]
A single official calendar for Mars does not yet exist, so a numbered Mars day, known as a "Sol", is used in the calculation. NASA or another authoritative agency determines the Sol number for the new event on Mars by counting Sols from the beginning of the mission. The Mars clock time of the event is determined by geographic location and sun ...
March 10 is the 69th day of the year ... in the Gregorian calendar; 296 days remain until the end of the year. ... 2006 – The Mars Reconnaissance Orbiter arrives at ...
Keep reading to discover how you can catch a glimpse of this red wonder at its biggest and brightest point this year thanks to Mars reaching opposition. ... chance to see Mars ... Day, on Friday ...
Catching a glimpse of the planets will depend on the time of day and their relative distance from the planet at the time. For example, Venus, Saturn and Jupiter are best viewed after sunset at ...
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