Convert second (sidereal) to octennial
Please provide values below to convert second (sidereal) [None] to octennial [None], or Convert octennial to second (sidereal).
How to Convert Second (Sidereal) to Octennial
1 None = 3.95019569374731e-09 None
Example: convert 15 None to None:
15 None = 15 × 3.95019569374731e-09 None = 5.92529354062096e-08 None
Second (Sidereal) to Octennial Conversion Table
| second (sidereal) | octennial |
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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.
Octennial
An octennial is a period of eight years.
History/Origin
The term 'octennial' has been used historically in various contexts to denote an eight-year interval, originating from Latin roots 'octo' meaning eight and 'annus' meaning year.
Current Use
Today, 'octennial' is rarely used in everyday language but may appear in academic or historical references to denote an eight-year span.