Convert year (Julian) to second (sidereal)
Please provide values below to convert year (Julian) [None] to second (sidereal) [None], or Convert second (sidereal) to year (Julian).
How to Convert Year (Julian) to Second (Sidereal)
1 None = 31644001.8903013 None
Example: convert 15 None to None:
15 None = 15 × 31644001.8903013 None = 474660028.35452 None
Year (Julian) to Second (Sidereal) Conversion Table
| year (Julian) | second (sidereal) |
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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.
Second (Sidereal)
A second (sidereal) is the time measurement based on Earth's rotation relative to distant stars, approximately 3 minutes shorter than the solar second, used in astronomy.
History/Origin
The sidereal second has origins in astronomical observations of Earth's rotation relative to distant celestial objects. It was established to provide a precise time standard for celestial measurements, differing from the solar second used in everyday timekeeping.
Current Use
The sidereal second is primarily used in astronomy and astrophysics for precise time measurements related to celestial events, star tracking, and satellite navigation systems.