Approx. 24.63 hours. so it very similar to Earth's.
A Martian solar day, or sol, is about 24 hours 40 minutes. (An Earth solar day is 24 hours.)
Mars
Mars.
Mars has a similar day length to Earth, a little longer at 24h 39m 35s (apparent solar day).
687 day
24 hours of the day
A day on Mars is not much longer at all than on Earth. It takes 24 hours and 40 minutes for a day to pass on Mars.
Mars. Although its year is significantly longer than an Earth year (time taken to orbit the Sun), its day length is very similar. It's slightly longer at about 24 hours and 37 mins. (That is the time taken for the planet to spin once on its axis, called a "sidereal" day.)
25 Earth hours
Mars has a day of 24 hours 39 minutes and 35 seconds
About 24 hours 39 minutes is the length of the "solar day" on Mars.
About 24 hours and 40 minutes.
Mars rotates, and therefore possesses both day and night. It's length of day is believed to be much the same as that of earth.