1.025 days
The length of a Martian day is equal to 1.027491204 Earth days. The length of one sidereal Martian year is equal to 1.880791 sidereal Earth years.
Mars rotates on its axis (one sidereal day) with a rotation period of 1.0256 Earth days or 24.622 hours. Mars orbits the Sun in 686.971 Earth days or 1.8808 Earth years or 668.6 Martian days. Mars has to have a leap year every third year and subtract a day or add two days.
Mars takes 686.971 days relative to the distant stars to make one full orbit. Revolution refers to the orbit of a planet; rotation refers to the turning of a planet on its axis. Its period of (sidereal) rotation is 24.6229 hours (one sidereal day).
The sidereal rotation period of Mars - one spin on its axis relative to background stars, is 24.623 hours. This is very similar to the earths sidereal rotation period.
One sidereal day on Venus is 243 Earth days, so a week or 7 days would be 1701 earth days.
a day on mars is 24 hours and 37 minutes slightly longer than an earth day. Edit : Yes, but that's the "sidereal day" or rotation period. There's also the "solar day" which is about 2 minutes longer.
Ceres sidereal rotation period is about 0.3781 days.
Mars period of revolution around the sun, its orbit, is 686.97 Earth days long.
About 687 Earth days.
"Mars takes 686.971 Earth days to orbit the Sun. That means that one Martian year is equal to 1.88 Earth years.""If you were standing on Mars, a year would take 668.5921 sols. In other words, Mars rotates 668.5921 during one orbit about the Sun."Also, it is interesting to know the length of a day on Mars:"A sidereal day on Mars is the length of time that it takes the planet to rotate once on its axis. A sidereal day on Mars lasts 24 hours 37 minutes and 22 seconds. The solar day is how long it takes the Sun to return to the meridian. This position changes slightly each day, but a solar day on Mars lasts 24 hours 39 minutes and 35 seconds."
The sidereal day is the time it takes for a planet to rotate once. For Venus that's about 243 of our Earth days.
One complete sidereal revolution of Earth takes about 365.25636 days. That is a little longer than a solar or tropical year, which last about 365.2422 days.