Convert year (Julian) to year (sidereal)
Please provide values below to convert year (Julian) [None] to year (sidereal) [None], or Convert year (sidereal) to year (Julian).
How to Convert Year (Julian) to Year (Sidereal)
1 None = 0.999982579460324 None
Example: convert 15 None to None:
15 None = 15 × 0.999982579460324 None = 14.9997386919049 None
Year (Julian) to Year (Sidereal) Conversion Table
| year (Julian) | year (sidereal) |
|---|
Year (Julian)
A year (Julian) is the period of time approximately 365.25 days, based on the Julian calendar, used to measure the length of a complete cycle of seasons and calendar years.
History/Origin
The Julian year was introduced by Julius Caesar in 45 BC as part of the Julian calendar reform, replacing the Roman calendar. It standardized the year length to 365 days with a leap year every four years to account for the extra quarter day.
Current Use
The Julian year is primarily used in astronomical calculations and historical contexts. It is also the basis for the Julian date system used in astronomy and other sciences to record continuous days.
Year (Sidereal)
A sidereal year is the time it takes for the Earth to complete one orbit around the Sun relative to the fixed stars, approximately 365.25636 days.
History/Origin
The concept of the sidereal year has been used since ancient astronomy to measure Earth's orbital period relative to distant stars, predating the Gregorian calendar system.
Current Use
Sidereal years are used in astronomy to track Earth's position in its orbit relative to fixed stars, aiding in celestial coordinate calculations and star cataloging.