The clock item shows, if you observe it, that the sun/moon rises on the right (west) side instead of the left (east) side. The sun/moon also sets in left (east) side instead of the right (west) side.
You can test this by having a clock in your hotbar, facing north and looking straight up while running this command in an active repeating command block:
/time add 50
It's a clock and not a compass. On a clock the dials run usually clock wise and not counter clock wise.