Is the global sunrise time at 6 o'clock and sunset time at 18 o'clock in the vernal equinox and autumnal equinox of senior one geography?

Theoretically, the vernal equinox and autumnal equinox are equally divided day and night in the world, with sunrise at 6 o'clock and sunset at 18 o'clock. After the vernal equinox, the days in the northern hemisphere are getting longer and shorter, and the nights in the southern hemisphere are getting shorter and shorter. At the vernal equinox, there are no extreme days and nights in the world. After the vernal equinox, it began to be extremely daytime near the North Pole, and its scope gradually expanded. Near the Antarctic, the extreme day ends and the extreme night begins, and the scope gradually expands.

At the North Pole and the South Pole, at the vernal equinox, the sun is on the horizon all day. After that, as the direct point of the sun continued to move northward, a six-month polar day began near the North Pole, and the scope gradually expanded; A six-month polar night began near the Antarctic, and the scope gradually expanded.

Extended data:

The vernal equinox was also called "Japan-China", "Day and Night Equinox" and "Midspring Moon" in ancient times. "Li Mingshi Yi" said: "The dividing line, the turn of Huang Chi, the sun stops here, and the day and night are equally divided." Therefore, the significance of the vernal equinox, first, refers to the equal division of day and night, each of which is 12 hours; Second, in ancient times, it was spring from beginning of spring to long summer, and the vernal equinox happened to be in the three months of spring, and spring was equally divided.