I’m not exactly sure why this particular date is used but by international agreement astronomers have selected 11 April, 1955 as 0 degrees for year 1 of this Martian calendar. What this means is that today, 31 July Earth time, is the start of a ‘new year’, the first day of spring for year 32 using the aforementioned calendar system.
Year 32
0 degrees — Spring Equinox — Jul 31 2013
90 degrees — Summer solstice — Feb 15 2014
180 degrees — Fall Equinox — Aug 17 2014
270 degrees — Winter Solstice — Jan 11 2015
Year 33
0 degrees — Spring Equinox — Jun 18 2015
Learn a little (or a lot) more about Mars at the NASA/JPL Mars Curiosity mission web site.
Here is approximately 3 minutes worth of Mars from the Orbit performance.
Click here to go to the Qué tal in the Current Skies web site for more observing information.
Filed under: Astronomy, climate, Curiosity on Mars, Mars, Multimedia, NASA, Observing, Planets, seasons, Solar System Exploration, STEM, Universe, Weather Tagged: astronomy, astrophotography, climate, curiosity, mars, martian calendar, martian season, martian spring, nasa, nasa jpl mars, northern hemisphere spring, science, seasons, weather