Any amount of time, it's just a matter of observation. But it is a fixed time, it does not vary except perhaps very slowly.
The planet Saturn takes about 10 hours and 39 minutes for it to rotate on its axis. Since the planet does not rotate uniformly the time does vary.
On the planet Venus, it takes 5,832 hours to complete a full rotation on the axis
It takes about 58.6 Earth days to rotate:)
Eris takes approximately 550 Earth years to rotate on its axis.
It takes roughly 24 and a half hours. To be more precise, it takes 24 hours 37 minutes 22 seconds.
It takes the sun 25 Earth days to rotate on its axis.
59 days
24 hours.
17.25 hours
On the planet Saturn, a single day lasts ten hours thirty-nine minutes. This refers to the time it takes for Saturn to rotate on its axis.
On the planet Saturn, a single day lasts ten hours thirty-nine minutes. This refers to the time it takes for Saturn to rotate on its axis.
Neptune takes 16 hours, 6 minutes and 36 seconds to rotate once on its axis. That's about 2/3rds of an Earth Day. Note that the period of rotation is measured by watching Neptune's magnetic field. The time cited is the time it takes the "whole planet" to rotate once on its axis. This is important because Neptune is not solid - it's a big gas planet, and the atmosphere is rotating at different speeds.