The day on mars is 1.026 earth-days long. the martian year lasts 686.98 earth-days. the two moons of mars take 0.32 earth-day (for phobos) and 1.26 earth-days (for deimos) to circle the planet. you are given the task of coming up with a martian calendar for a new mars colony. would a solar or lunar calendar be better for tracking the seasons?