Convert hour (sidereal) to septennial
Please provide values below to convert hour (sidereal) [None] to septennial [None], or Convert septennial to hour (sidereal).
How to Convert Hour (Sidereal) to Septennial
1 None = 1.625223369331e-05 None
Example: convert 15 None to None:
15 None = 15 × 1.625223369331e-05 None = 0.00024378350539965 None
Hour (Sidereal) to Septennial Conversion Table
| hour (sidereal) | septennial |
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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.
Septennial
A septennial is a period of seven years.
History/Origin
The term originates from Latin 'septennium', used historically to denote a seven-year interval, often in contexts such as anniversaries or cycles in various systems.
Current Use
The term 'septennial' is rarely used in modern timekeeping but may appear in historical or literary contexts to describe events or periods lasting seven years.