Days to Sidereal Days: the quick answer
1 d = 1.00274 sid d
1 day equals 1.00274 sidereal days
To convert days to sidereal days, multiply the value by 1.00274. To go the other way, multiply sidereal days by 0.99727 to get days.
To convert days to sidereal days, multiply the value by 1.00274. To go the other way, multiply sidereal days by 0.99727 to get days.
| Days (d) | Sidereal Days (sid d) |
|---|---|
| 1 d | 1.00274 sid d |
| 2 d | 2.00548 sid d |
| 3 d | 3.00821 sid d |
| 4 d | 4.01095 sid d |
| 5 d | 5.01369 sid d |
| 6 d | 6.01643 sid d |
| 7 d | 7.01917 sid d |
| 8 d | 8.0219 sid d |
| 9 d | 9.02464 sid d |
| 10 d | 10.0274 sid d |
| 12 d | 12.0329 sid d |
| 14 d | 14.0383 sid d |
| 15 d | 15.0411 sid d |
| 20 d | 20.0548 sid d |
| 21 d | 21.0575 sid d |
| 24 d | 24.0657 sid d |
| 25 d | 25.0684 sid d |
| 30 d | 30.0821 sid d |
| 40 d | 40.1095 sid d |
| 50 d | 50.1369 sid d |
| 60 d | 60.1643 sid d |
| 75 d | 75.2053 sid d |
| 80 d | 80.219 sid d |
| 100 d | 100.274 sid d |
| 200 d | 200.548 sid d |
| 250 d | 250.684 sid d |
| 300 d | 300.821 sid d |
| 400 d | 401.095 sid d |
| 500 d | 501.369 sid d |
| 750 d | 752.053 sid d |
| 1,000 d | 1,002.74 sid d |
Day (d). A day is 24 hours (86,400 seconds).
Sidereal day (sid d). A sidereal day (23 h 56 min 4.09 s) is one rotation of the Earth relative to the stars.
There are 1.00274 sidereal days in one day.
Multiply the number of days by 1.00274. For example, 10 days equal 10.0274 sidereal days.
One sidereal day equals 0.99727 days.
12.0329 sidereal days. Other common values: 5 days = 5.01369 sidereal days and 100 days = 100.274 sidereal days.