
Mars Marks New Year at Northern Equinox, Starting 22-Month Orbit
Mars began a new year on September 30, 2026, at 4:16 a.m. EDT, marking the start of its 687-Earth-day orbit. This date corresponds to the northern equinox, initiating spring in the north and autumn in the south. A Martian year consists of 668 sols, each lasting 24 hours and 39 minutes. Due to Mars' elliptical orbit, its seasons are unequal in length, with the northern hemisphere receiving more sunlight during its summer.
