Convert gregorian year to sidereal year
Here you can quickly calculate how many sidereal year fit in one gregorian year.
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- scroll: formula · table · questions -
- 1 = 0.999961
- 1 = 1.000039
Example: gregorian year to sidereal year
- 1 gregorian year = 0.999961 sidereal year
Gregorian year to sidereal year conversion table
| gregorian year | sidereal year |
|---|---|
| 1 | 0.999961 |
| 2 | 1.999922 |
| 5 | 4.999806 |
| 10 | 9.999612 |
| 20 | 19.999224 |
| 50 | 49.998061 |
| 100 | 99.996121 |
Gregorian year to sidereal year formula
To convert gregorian year to sidereal year, multiply by 0.999961.
1 = 0.999961
Example: 1 gregorian year = 0.999961 sidereal year
Common time conversion mistakes
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A year is not exactly 52 weeks: 365 days is 52 weeks plus one day, and a leap year 52 weeks plus two. That extra day is why the same date shifts one weekday each year. When spreading a yearly amount per week, use 52.18 weeks per year.
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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 gregorian year and sidereal year conversion quiz
Score:
0
11.2 gregorian year equals 12.9 sidereal year.
Correct answer: 11.2 gregorian year = 11.2 sidereal year.
134 gregorian year equals 134 sidereal year.
Correct answer: 134 gregorian year = 134 sidereal year.
11.2 sidereal year equals 12.9 gregorian year.
Correct answer: 11.2 sidereal year = 11.2 gregorian year.
23.7 sidereal year equals 21.3 gregorian year.
Correct answer: 23.7 sidereal year = 23.7 gregorian year.