Convert year (Julian) to hour (sidereal)
Please provide values below to convert year (Julian) [None] to hour (sidereal) [None], or Convert hour (sidereal) to year (Julian).
How to Convert Year (Julian) to Hour (Sidereal)
1 None = 8790.00053487711 None
Example: convert 15 None to None:
15 None = 15 × 8790.00053487711 None = 131850.008023157 None
Year (Julian) to Hour (Sidereal) Conversion Table
| year (Julian) | hour (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.
Hour (Sidereal)
An hour (sidereal) is a unit of time based on the Earth's rotation relative to distant stars, equal to approximately 3,894 seconds, used primarily in astronomy.
History/Origin
The sidereal hour originated from the ancient division of the day based on Earth's rotation relative to the stars, differing from the solar hour by about 4 minutes, and has been used historically in astronomy for precise timekeeping.
Current Use
Sidereal hours are mainly used in astronomy and astrophysics to measure celestial events and the Earth's rotation relative to distant celestial objects, rather than in everyday timekeeping.