Are there 23hr and 56min in a day?

Answer 1

Most certainly, yes. There are 23 hours 56 minutes and 4.1 seconds (very nearly) in a SIDEREAL day. The sidereal day is a very important concept, although it is not an easy one to understand initially. The earth rotates exactly 360 degrees, a full rotation, in 23 hours 56 minutes and 4.1 seconds. One day of Universal time (UTC) is exactly 24 hours in length, during which the earth rotates a little more than 360 degrees. It should be obvious that the beginning of the sidereal day will wander around the standard clock-- all the way round, in fact, during the course of a year. For example, there is a day when "sidereal midnight" will coincide with noontime at Greenwich.

Answer 2

Yes and No.

There are 24 hours in what we normally call a day. More precisely, this is the mean solar day, which is an average of the length of time it takes for the Earth to rotate once on its axis relative to the Sun.

There are 23 hours 56 minutes 4.1 seconds in a sidereal day, which is the length of time it takes for the Earth to rotate once on its axis relative to the far distant stars.

There reason there is a difference between the solar day and the sidereal day is that, while the Earth is rotating on its axis, it is also revolving around the Sun, so each day, the Sun rises and sets in a different place relative to the Vernal Equinox, said equinox being that point in space where the Sun's apparent path crosses the celestial equator on its northward trek around March 21st.

Answer 3

No, a day is not 23 hours. There are a few ways of measuring what a day is, as there are different interpretations, all of which are close to or exactly 24 hours.

Answer 4

No, there are 24 hours in a day. Each hour has 60 minutes, resulting in a total of 1,440 minutes in a day.

Answer 5

there is 23 hours, 59 minutes, and 59 seconds

Answer 6

5