How Long is a day on Mars compared to Earth?
a day on mars is 24 hours, 39 minutes and 35 seconds compared to earth.
If you are speaking of one orbit around the sun, about 2 earth years. If you are using Earth's calendar, one year is one year. (note it's rotation on it's axis is a little more than one Earth day - 24.6 hours) on mars there is only a little time difference if compared to the earth if on earth 7:00AM than on mars it will be 7:10AM!!