Units
speed

speed

Speed of light

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

formulas

kilometer per hour × 9.265669318472314E-10

kilometer per hour / 9.265669318472314E-10