By the apparent motion of the distant, so-called fixed, stars about the Earth Sidereal time is used by astronomers to locate objects. A sidereal day measured from Earth is approximately 86,164.0905 seconds (23 h 56 min 4.0905 s, or 23.9344696 h).
How many pollutants are measured under the recently launched National Air Quality Index ?
In general what is the maximum time applied to competitive eating contests, where the aim is to eat the most of some food in a set time?
