Convert hour (sidereal) to year (leap)
Please provide values below to convert hour (sidereal) [None] to year (leap) [None], or Convert year (leap) to hour (sidereal).
How to Convert Hour (Sidereal) to Year (Leap)
1 None = 0.000113532509550192 None
Example: convert 15 None to None:
15 None = 15 × 0.000113532509550192 None = 0.00170298764325288 None
Hour (Sidereal) to Year (Leap) Conversion Table
| hour (sidereal) | year (leap) |
|---|
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.
Year (Leap)
A leap year is a year that has 366 days, including an extra day (February 29) added to keep the calendar year synchronized with the astronomical year.
History/Origin
The concept of adding an extra day to the calendar was introduced by the Julian calendar in 45 BC and refined by the Gregorian calendar in 1582 to correct inaccuracies in the Julian system, establishing the current rules for leap years.
Current Use
Leap years are used in the Gregorian calendar to maintain alignment with Earth's orbit around the Sun, occurring every four years with exceptions for century years not divisible by 400, ensuring calendar accuracy over long periods.