Convert day (sidereal) to septennial
Please provide values below to convert day (sidereal) [None] to septennial [None], or Convert septennial to day (sidereal).
How to Convert Day (Sidereal) to Septennial
1 None = 0.000390053609454277 None
Example: convert 15 None to None:
15 None = 15 × 0.000390053609454277 None = 0.00585080414181415 None
Day (Sidereal) to Septennial Conversion Table
| day (sidereal) | septennial |
|---|
Day (Sidereal)
A sidereal day is the time it takes for the Earth to complete one rotation relative to distant stars, approximately 23 hours, 56 minutes, and 4.1 seconds.
History/Origin
The concept of the sidereal day has been used in astronomy for centuries to measure Earth's rotation relative to fixed stars, differing slightly from the solar day used in everyday timekeeping.
Current Use
Sidereal days are primarily used in astronomy and celestial navigation to track the positions of stars and other celestial objects accurately.
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.