Sidereal Days to Days: the quick answer
1 sid d = 0.99727 d
1 sidereal day equals 0.99727 days
To convert sidereal days to days, multiply the value by 0.99727. To go the other way, multiply days by 1.00274 to get sidereal days.
To convert sidereal days to days, multiply the value by 0.99727. To go the other way, multiply days by 1.00274 to get sidereal days.
| Sidereal Days (sid d) | Days (d) |
|---|---|
| 1 sid d | 0.99727 d |
| 2 sid d | 1.99454 d |
| 3 sid d | 2.99181 d |
| 4 sid d | 3.98908 d |
| 5 sid d | 4.98635 d |
| 6 sid d | 5.98362 d |
| 7 sid d | 6.98089 d |
| 8 sid d | 7.97816 d |
| 9 sid d | 8.97543 d |
| 10 sid d | 9.9727 d |
| 12 sid d | 11.9672 d |
| 14 sid d | 13.9618 d |
| 15 sid d | 14.959 d |
| 20 sid d | 19.9454 d |
| 21 sid d | 20.9427 d |
| 24 sid d | 23.9345 d |
| 25 sid d | 24.9317 d |
| 30 sid d | 29.9181 d |
| 40 sid d | 39.8908 d |
| 50 sid d | 49.8635 d |
| 60 sid d | 59.8362 d |
| 75 sid d | 74.7952 d |
| 80 sid d | 79.7816 d |
| 100 sid d | 99.727 d |
| 200 sid d | 199.454 d |
| 250 sid d | 249.317 d |
| 300 sid d | 299.181 d |
| 400 sid d | 398.908 d |
| 500 sid d | 498.635 d |
| 750 sid d | 747.952 d |
| 1,000 sid d | 997.27 d |
Sidereal day (sid d). A sidereal day (23 h 56 min 4.09 s) is one rotation of the Earth relative to the stars.
Day (d). A day is 24 hours (86,400 seconds).
There are 0.99727 days in one sidereal day.
Multiply the number of sidereal days by 0.99727. For example, 10 sidereal days equal 9.9727 days.
One day equals 1.00274 sidereal days.
11.9672 days. Other common values: 5 sidereal days = 4.98635 days and 100 sidereal days = 99.727 days.