This calculator allows you to convert from Second (sidereal) to Millisecond and in a reverse direction. To convert from Second (sidereal) to Millisecond, enter the amount of Second (sidereal) into the first input and to convert from Millisecond to Second (sidereal), enter the amount of Millisecond into the second input.
20 Second (sidereal) = 19945.391203704 Millisecond
Second (sidereal) to Second | Second (sidereal) to Minute | Second (sidereal) to Hour | Second (sidereal) to Week | Second (sidereal) to Month | Second (sidereal) to Year |20 Second (sidereal) equal 19945.391203704 Millisecond.
Every 1 Second (sidereal) = 997.26956018519 Millisecond and so, 20 Second (sidereal) = 20 multiplied by 997.26956018519 = 19945.391203704 Millisecond.
What is the second?
The second is an important unit of time. It is the main unit of time in the SI system of units. It can be defined as the time it takes an electromagnetic field to propagate through 3 x 10 5 km of vacuum.
One solar day has 86,400 seconds. There are 60 second per minute.
Second is not small and specific enough to be used by scientists and engineers so smaller units were derived such as:
| 10 Second (sidereal) = 9972.6956018519 Millisecond |
| 11 Second (sidereal) = 10969.965162037 Millisecond |
| 12 Second (sidereal) = 11967.234722222 Millisecond |
| 13 Second (sidereal) = 12964.504282407 Millisecond |
| 14 Second (sidereal) = 13961.773842593 Millisecond |
| 15 Second (sidereal) = 14959.043402778 Millisecond |
| 16 Second (sidereal) = 15956.312962963 Millisecond |
| 17 Second (sidereal) = 16953.582523148 Millisecond |
| 18 Second (sidereal) = 17950.852083333 Millisecond |
| 19 Second (sidereal) = 18948.121643519 Millisecond |
| 20 Second (sidereal) = 19945.391203704 Millisecond |
| 21 Second (sidereal) = 20942.660763889 Millisecond |
| 22 Second (sidereal) = 21939.930324074 Millisecond |
| 23 Second (sidereal) = 22937.199884259 Millisecond |
| 24 Second (sidereal) = 23934.469444445 Millisecond |
| 25 Second (sidereal) = 24931.73900463 Millisecond |
| 26 Second (sidereal) = 25929.008564815 Millisecond |
| 27 Second (sidereal) = 26926.278125 Millisecond |
| 28 Second (sidereal) = 27923.547685185 Millisecond |
| 29 Second (sidereal) = 28920.81724537 Millisecond |
| 30 Second (sidereal) = 29918.086805556 Millisecond |
