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Convert julian year to sidereal year

Here you can quickly calculate how many sidereal year fit in one julian year.
write a number and we convert instantly
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- scroll: formula · table · questions -

  • 1 = 0.999983
  • 1 = 1.000017

Example: julian year to sidereal year

  • 1 julian year = 0.999983 sidereal year

Julian year to sidereal year conversion table

julian year sidereal year
1 0.999983
2 1.999965
5 4.999913
10 9.999826
20 19.999651
50 49.999129
100 99.998257

Julian year to sidereal year formula

To convert julian year to sidereal year, multiply by 0.999983.

1 = 0.999983
Example: 1 julian year = 0.999983 sidereal year

Common time conversion mistakes

  • There are several year definitions: the Julian year is exactly 365.25 days, the Gregorian calendar year 365.2425, and the tropical year about 365.2422 days. For everyday use the differences are negligible, but they matter in astronomy, the light-year, for instance, is defined using the Julian year.

Quick julian year and sidereal year conversion quiz

Score: 0

121 sidereal year equals 121 julian year.

Correct answer: 121 sidereal year = 121 julian year.

16.8 sidereal year equals 16.8 julian year.

Correct answer: 16.8 sidereal year = 16.8 julian year.

13.1 sidereal year equals 11.8 julian year.

Correct answer: 13.1 sidereal year = 13.1 julian year.

More time conversions