Naked Eye Sidereal and Solar Day Documents
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Mario Belloni and
The Naked Eye Sidereal and Solar Day model illustrates the difference between the sidereal and solar day. This simulation shows the view from the Earth as one would observe in the night sky. The sidereal day is the day according to the stars. It is the time it takes for a particular star to rotate around the Earth (from the Earth's perspetive) and end up in the same part of the sky as it started. On Earth, this time is 23 hours and 56 minutes. The unit of time called a solar day is the time it takes for the Sun to get back to the same place in the sky as it was before. On Earth, this time is 24 hours.
Published September 2, 2013
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