sol
not a proper symbol.. the right on should be 'c' but that's being taking by °celsius ( temperature ) which is a much more often used unit.. therefore i went with SpeedOfLight(sol).. if anyone knows something more appropriate.. let me know
accessable via:
sol
Speed of light
kilometer per hour × 9.265669318472314E-10
kilometer per hour / 9.265669318472314E-10