DA you should check your data and not be so anxious to argue from error with people.

Speed of light
?The speed of light in a vacuum is exactly 299,792,458 metres per second (or 1,079,252,848.8 kilometres per hour, which is approximately 186,282.397 miles per second, or 670,616,629.4 miles per hour). This value is denoted by the letter c, reputedly from the Latin celeritas, "speed". Note that this speed is a definition, not a measurement, since the fundamental SI unit of distance, the metre, has been defined since 1983 in terms of the speed of light?one metre is the distance light travels in a vacuum in 1/299,792,458 of a second. The speed of light through a transparent medium (that is, not in vacuum) is less than c; the ratio of c to this speed is called the refractive index of the medium.
Cherenkov effect in a "swimming pool" nuclear reactor. The effect is due to electrons travelling faster than the speed of light in water.?
-----------------------------------------------------------------------------------------------------------

So 299,792,458 meters * .62137 = 186,282 miles per second. This is not the best recitation of the speed. Other more focused sources convert to about 186,281.75 miles per second.
It is really curious that you would jump in on such a basic thing to argue. Like your previous argument that the Sun does not rotate at the equator as I said. Lighten up.
jjw