Speed of light

The speed of light in a vacuum is exactly 29,97,92,458 metres per second. The 14th century Indian philosopher Sayana wrote, "[O Sun] you who traverse 2202 'yojanas' in half a 'nimesa'.". A 'yojana' is an ancient unit of length and 'nimesa' an ancient unit of time that was used in India. Conversions show the speed of light according to Sayana to be about 30,20,00,000 meters per second. Amazingly close!