Why do clocks and watches all rotate to the right?

Before the quartz clock, the time was measured with an hourglass and a water clock. Earlier, the ancients measured the sun by standing a pole.

When the sun rises, the shadow of the long pole falls to the West. As the sun moves to the zenith, the shadow gradually shortens and rotates around the pole. At noon, the sun reaches the top of the head, and the shadow is the shortest (at the summer solstice, most places even have no shadow). After noon, the sun is in the west of the pole, and the shadow of the pole falls to the East, and grows gradually. The shadow of the pole moves all the time and forms a right-hand rotation around the pole point. The reason for the right rotation is that the pole setting was carried out by the ancients in the northern hemisphere at that time, and the reason is that the sun tends to the south in a year. In ancient times, if people in the southern hemisphere set up a pole to measure the sun, the rotation of their shadow was just opposite to the observation results in the northern hemisphere, and their shadow would rotate left.

When people wanted to make quartz clocks, the ancients who had been used to measuring the fleeting time in the right-hand direction naturally chose the pointer rotation mode that we now use, that is, the right-hand rotation mode.