How do the lopsided seasons on Mars affect choices for dividing the year into months?
Many Martian calendars divide the year into nearly equal lengths of time (to within a sol). A few instead divide the orbit of Mars around the sun into equal arcs, and since Mars travels at different speeds at different points in its elliptical orbit, the months on such calendars vary in their duration by about 50 percent. Although each season contains the same number of months on such calendars, each month has a different number of days from every other month.
