F.U.B.A.R.
Bluelight Crew
Neither do I but Physicists use meters per second so I only ever remember the figure in MPS - I'd have to Google it to find out what it was in Mph or Kph, or Miles per second even.
The speed of light at approx 186000 miles per second is one of the earliest scientific facts I remember from my 'Childrens Encyclopaedia of Knowledge', c1969. I don't know if SI units were even invented then, so that figure has always stuck with me...