It's about 17 hours and 14 minutes long. (Incidentally, for the outer planets there's very little difference between the lengths of the sidereal days and the solar days.)
The lenght of a day is 17.4hours and if you roux it it is 17 earth hours
Mars.
The actual length of a day is 23 hours, 56 minutes and 4.09 seconds
the outer four have longer days
The length of day and night is equal at the Vernal and Autumnal equinox.
Day and night are of equal length throughout the year at the equator.
the length of day on earth is 24 hours
Mars
Mars.
The length of the day in th US is the same as the length of the day anywhere else in the world, roughly 24 hours.
the length of a day on Jupiter is average, 9.9 hours
See answer given for length of Venus day in hours.
the length of the day is not a fixed unit of time
The length of a "day" on the moon is 29 Earth days.
29.5 earth days is one moon day wich is the length of the moons day
During the Autumn equinox the length of the day and night are nearly equal. The length of the day on the equinox is approximately twelve hours.
Mars has a day of 24 hours 39 minutes and 35 seconds
The length of day does not affect the season.