Distance per time seems like a very poor choice of unit for something that's roughly rotating about one corner of itself.
"0.24 degrees per hour" (assuming 12 work hours per day) just doesn't really ring to me... and I have a mechanical engineering degree.
Ignoring the ‘arc’, that’s dimensionless. You could just call it “0.24” ;-)
For angle representation, better use gradians because radians and degrees are too easy.