control of the government of a state, community, or other body by its own members; democratic government. the condition of being self-governed.
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, after Mercury. Named after the Roman god of war, it is often referred to as the Red Planet because the iron oxide prevalent on its surface gives it a reddish appearance.
Since the Mars year equals approximately 687 Earth days and a Martian day equals approximately 24.62 earth hours (and, the Earth day equals 24 hours), the math is simple: 687 * 24 / 24.62 = 669.699 ~ 669.7. The Martian year is 669.7 Martian days long. It takes Mars 686.98 days to orbit the Sun. A Mars day is 24.7 hours.