Mars's day-length is close to that of Earth: 24.7 hours. As such, there are 1.03 Martian days per every one Earth Day; or, alternatively, 0.97 Earth days per every one Martian day.
THE ANSWER IS 687 EARTH DAYS
It takes 687 Earth days for mars to orbit the Sun
90 days
Mars rotates on its axis in 24.6 earth hours = 1.025 earth days.
About 687 Earth days.
The orbital period of Mars is 686.971 days.
365 days
687 days.
687 days
260 days a proximately
80 ,000000000000
About 687 to 686