In the spring and autumn equinox, the world is divided equally between day and night. What is the pole at this time?

The pole is located on the termination line, which means that the termination line coincides with the meridian.

When the termination line coincides with the meridian, it is the vernal equinox or autumnal equinox.

On that day, the world was divided equally between day and night, that is, day 12 hour and night 12 hour. Half the sun revolves around the horizon. The north pole is clockwise and the south pole is counterclockwise.