Convert hour (sidereal) to year (tropical)
Please provide values below to convert hour (sidereal) [None] to year (tropical) [None], or Convert year (tropical) to hour (sidereal).
How to Convert Hour (Sidereal) to Year (Tropical)
1 None = 0.000113768068569621 None
Example: convert 15 None to None:
15 None = 15 × 0.000113768068569621 None = 0.00170652102854431 None
Hour (Sidereal) to Year (Tropical) Conversion Table
| hour (sidereal) | year (tropical) |
|---|
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 (Tropical)
A year (tropical) is the period of approximately 365.24 days, representing one cycle of the Earth's seasons based on the vernal equinox.
History/Origin
The tropical year has been used since ancient times to track seasons and calendar systems, with the Gregorian calendar refining the measurement to align with the Earth's orbit around the Sun.
Current Use
The tropical year is used as the basis for the Gregorian calendar, which is the most widely adopted civil calendar worldwide, to organize years and seasons.