Was there an alternative adjective to “clockwise” other than “the rotation you take around left hand”?
Also, how did all watch companies around the world agree on what the direction of “clockwise” is?
“Sunwise”, and for the exact same reason.
Clocks go clockwise because their predecessors did. What were their predecessors?
Sundials.
How does the shadow go around a sundial? Well, sunwise, of course.
Counterclockwise, as said in another comment, was “widdershins”, from a Middle Low German phrase meaning “against the way”.
I am trying to picture it, but I think the sunwise convention only works in the Northern hemisphere.
Yep - in the northern hemisphere a sundial shadow will move from west to east in a clockwise fashion; in the southern hemisphere it still goes west to east but does so moving anticlockwise.