How many millennium in 1 sidereal year?
The answer is 0.0010007023561644.

We assume you are converting between **millennium** and **sidereal year**.

You can view more details on each measurement unit:

millennium or
sidereal year

The SI base unit for **time** is the second.

1 second is equal to 3.1709791983765E-11 millennium, or 3.1687536047488E-8 sidereal year.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between millennia and years.

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1 millennium to sidereal year = 999.29814 sidereal year

2 millennium to sidereal year = 1998.59627 sidereal year

3 millennium to sidereal year = 2997.89441 sidereal year

4 millennium to sidereal year = 3997.19255 sidereal year

5 millennium to sidereal year = 4996.49068 sidereal year

6 millennium to sidereal year = 5995.78882 sidereal year

7 millennium to sidereal year = 6995.08696 sidereal year

8 millennium to sidereal year = 7994.38509 sidereal year

9 millennium to sidereal year = 8993.68323 sidereal year

10 millennium to sidereal year = 9992.98137 sidereal year

You can do the reverse unit conversion from sidereal year to millennium, or enter any two units below:

millennium to hour

millennium to week

millennium to quarter

millennium to microsecond

millennium to month

millennium to millisecond

millennium to century

millennium to nanosecond

millennium to fortnight

millennium to shake

A millennium is a period of time equal to one thousand years. There are two main viewpoints about naming millennia and there was a popular debate leading up to the celebrations of the year 2000 as to whether 2000 was the beginning of a new millennium. Historically, there has been debate around the turn of the millennium, centuries and decades before.

A sidereal year (from Latin sidus "asterism, star") is the time taken by the Earth to orbit the Sun once with respect to the fixed stars. Hence it is also the time taken for the Sun to return to the same position with respect to the fixed stars after apparently travelling once around the ecliptic. It equals 365.25636 SI days for the J2000.0 epoch.

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