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When accounting solar days on Earth, astronomers often use Julian dates—a simple sequential count of days—for timekeeping purposes. An analogous system for Mars has been proposed "[f]or historical utility with respect to the Earth-based atmospheric, visual mapping, and polar-cap observations of Mars, ... a sequential count of sol-numbers".
Tropical zodiac dates [1] Sidereal zodiac dates [2] [3] [4] (Lahiri ayanamsa) Dates based on 14 equal length sign zodiac used by Schmidt [5] [i] Based on IAU boundaries [6] Aries: Mar 21 – Apr 19: April 14 – May 14: April 16 – May 11: Apr 18 – May 13 Cetus [i] — — May 12 – June 6 [i] — [dubious – discuss] Taurus: Apr 20 ...
The Clancy Mars year is reckoned from one Martian northward equinox to the next (L s = 0°), and specific dates within a given year are expressed in L s. The Clancy Mars year count is approximately equal to the Darian year count minus 183. The Allison Mars sol date epoch equates to L s = 276.6° in a year that is undefined in the Clancy Mars ...
The dates the Sun passes through the 12 astronomical constellations of the ecliptic are listed below, accurate to the year 2011. The dates will progress by an increment of one day every 70.5 years. The corresponding tropical and sidereal dates are given as well.
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The orbiter reached Mars orbit on September 24, 2014. Through this mission, ISRO became the first space agency to succeed in its first attempt at a Mars orbiter. The mission is the first successful Asian interplanetary mission. [6] Ten days after ISRO's launch, NASA launched their seventh Mars orbiter MAVEN to study the Martian atmosphere.
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Ingenuity was designed to fly five times in 30 Mars sols (31 Earth days), but operated far above expectations, making its 72nd and final flight on January 18, 2024 , 977 Mars sols (1,004 Earth days) after its first flight. Its rotor blades were damaged on the last flight's landing, causing NASA to retire the craft.