The speed of light is not dependent on how long time it travels.
299,792,458 meters/second
186,282.4 miles per second.
At the speed of light, which is 299,792,458 metres per second.
Light travels at the rate of about 300,000 km a second.
300000 km/second
The speed of light in water is about 225,400 kilometres per second.
At approx 300,000 km per second.
it travels at about 128,609 miles per second!
The speed of light in a vacuum is approximately 186,282 miles per second (or about 299,792 kilometers per second).
Radio waves travel at the speed of light 300 Million meters/second, 300e6 meters/second
Exactly 299,792.548 meters per second.
About 1100 feet per second, which is the speed of sound.