Instant · Precise · Universal
28 units available
6 categories total
To convert sidereal minutes to solar seconds: multiply by 59.836. To solar minutes: multiply by 0.99727.
1 sidereal minute = 59.836 solar seconds. 60 sidereal minutes = 1 sidereal hour.
For example, 1 Minute (Sidereal) (min (Sid)) = 0.00004946773313 Fortnight (fn).
| Minute (Sidereal) (min (Sid)) | Fortnight (fn) |
|---|---|
| 0.1 | 0.000004946773313 |
| 0.5 | 0.00002473386657 |
| 1 | 0.00004946773313 |
| 2 | 0.00009893546627 |
| 5 | 0.0002473386657 |
| 10 | 0.0004946773313 |
| 25 | 0.001236693328 |
| 50 | 0.002473386657 |
| 100 | 0.004946773313 |
| 500 | 0.02473386657 |
| 1000 | 0.04946773313 |
The sidereal minute is 1/60 of a sidereal hour — approximately 59.836 seconds in solar time.
1 sidereal minute = 59.836 solar seconds. 60 sidereal minutes = 1 sidereal hour.
To convert sidereal minutes to solar seconds: multiply by 59.836. To solar minutes: multiply by 0.99727.
Precise observation timing, transit event recording, and telescope tracking rate calibration.
A sidereal minute is about 0.164 seconds shorter than a solar minute — small but significant over an observing session.
Using solar minutes when sidereal minutes are required in astronomical calculations — the error accumulates over time.
Sidereal minutes/seconds are just slightly shorter than their solar counterparts. The ratio is always ~0.99727.
A fortnight is a unit of time equal to 14 days, or two weeks (1,209,600 seconds).
1 fortnight = 14 d = 2 wk = 336 h = 1,209,600 s.
To convert fortnights to days: multiply by 14. To convert fortnights to weeks: multiply by 2.
Fortnightly pay cycles (common in Australia and UK), rental payment periods, and magazine publication schedules.
In Australia, being paid 'fortnightly' is the most common pay cycle. The FFF system defines speed in furlongs per fortnight.
Americans may be unfamiliar with the term. In US English, 'two weeks' is the standard equivalent.
Fortnight = fourteen nights. In countries where it's common, it's as natural as saying 'week' — just meaning two of them.



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