Convert day to second (sidereal)
day
Definition: A day (symbol: d) is an accepted, non-SI unit of time that is defined based on the SI (International System of Units) unit of time, the second, and is equal to 86,400 seconds.
History/origin: The term "day" originates from the Old English term "dæg." It is approximately equal to the period required for the Earth to complete a full rotation with respect to the sun. This was later re-defined in terms of the second in 1960, when the second was redefined in terms of Earth's orbital motion in the year 1900. The second, and therefore the day, was again re-defined in 1967 by atomic electron transition.
Current use: The day is a term used worldwide within many contexts one of the most common of which is to refer to a time interval of 24 hours. It is also used to reference daytime, or the period of time during which the sun is above the horizon. The term also has other colloquial uses such as the day of the week and fixed clock periods like 6:00 am to 6:00 pm, among others.
second (sidereal)
Definition: Second (sidereal) is a measure of time duration. For conversion purposes, its value is 0.9972695602 times the reference unit, second.
day to second (sidereal) Conversion Table
| day [d] | second (sidereal) [second (sidereal)] |
|---|---|
| 0.01 day | 866.37 second (sidereal) |
| 0.10 day | 8664 second (sidereal) |
| 1 day | 86637 second (sidereal) |
| 2 day | 173273 second (sidereal) |
| 3 day | 259910 second (sidereal) |
| 5 day | 433183 second (sidereal) |
| 10 day | 866366 second (sidereal) |
| 20 day | 1732731 second (sidereal) |
| 50 day | 4331828 second (sidereal) |
| 100 day | 8663656 second (sidereal) |
| 1000 day | 86636556 second (sidereal) |
How to Convert day to second (sidereal)
1 day = 86637 second (sidereal)
1 second (sidereal) = 0.000012 day
Example
Convert 15 day to second (sidereal):
15 day = 15 × 86637 second (sidereal) = 1299548 second (sidereal)
