how many spins dose earth do in one year?

Answer 1

A bit more than 366.25 in relation to the distant stars.

Every time we spin exactly once (in relation to the distant 'fixed' stars), we have move a bit on our orbit. It takes approximately an extra 4 minutes to 'catch up' to the Sun.

Over a year, as we complete one orbit around the sun, all these 4 minutes add up to a complete turn.

So, in relation to the Sun, we will have seen only 365.25 days (for example, from noon to noon) which will lead us to think that we have spun around only 365.25 times.

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Another way to calculate it:
Earth's spin in relation to distant stars takes 86,164.1 seconds (23h56m04.1s). This is the real spin (if you want to calculate the Earth's effect on gyroscopes, for example).

Earth's spin in relation to the Sun is 86,400 seconds (24 hours). This is the one on which we, earthlings, have based our clocks. In reality, the Earth will have turned almost 361 degrees in that time.

A year (relative to distant stars) is 31,558,149.5 seconds; at 86,164.1 second per turn, that gives us 366.256 turns.

If you are a stickler for definitions, then the 'year' is the tropical year (equinox to equinox: the return of the seasons) and is 31,556,925.2; that gives us 366.242 turns.

Some prefer to use the Gregorian year (the one on which our calendar is based) of 31,556,952 seconds; that gives us 366.242 turns.

If you want to use a real calendar year, then you have normal years of 365 solar days = 31,536,000 seconds, giving us 365.9993 turns (which I am willing to call 366).

Or you have leap years: 366 solar days = 31,622,400 seconds, giving us 367.002 turns.

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If you use the Muslim lunar year (12 lunar months = 354.367 solar days = 30,617,314.7 seconds) then you only get 355.337 turns.

Answer 2

365.35 times. Each time earth spins equals a day, and 365.25 days in a year.

Answer 3

a little less than 365 days because one revolution of earth takes 23 hrs and 56 minutes

Answer 4

a day is the amount of time it takes the earth to spin once around its axis, and a year is the amount of time it takes to earth to make one orbit around the sun.

Answer 5

spin around the sun? once every 365.25 days

spin around it's axis (which is why we have day and night)
365.25 times

Answer 6

it spins once every day..so 365

Answer 7

about 365.....

Answer 8

365.25