It depends on which planet your talking about, for example if your talking about Earth its about 24 hours.
Every rotation of a planet on its axis is a planetary day.
One full revolution of that planet. The planetary day of Earth is 24 Earth hours long. Other planets spin at various speeds, with Jupiter the fastest (shortest day) and Venus the longest (barely rotating, and in the opposite direction of its orbit). Because of the short year on Mercury (88 Earth days), and its long day (59 Earth days), the apparent "solar day" on its surface is twice its year, or 176 Earth Days.
Mars spins slower than earth
Mars is a planetary body.
bang bang
spinning
One can purchase a planetary mixer in online stores such as Amazon or eBay. In addition, stores that offer kitchen equipment will also sell planetary mixers.
It doesn't. Day and night are planetary phenomena caused by the rotation of the planet.
According to Kepler's laws of planetary motion, planetary orbits are in the shape of an ellipse with the Sun at one of the foci.
Approx 687 days.
Makes me want to go there one day in the uture like 2025. it make me want to hurt whoever demoted Pluto from planetary status >:(
One day = 24 hours That's twice as long as 12 hours.