What season has extreme days in the southern hemisphere?

At the vernal equinox and autumnal equinox of a year, the sun shines directly on the equator, and at this time, the length of day and night is equal everywhere on the earth. After the vernal equinox, the point of direct sunlight gradually moved northward, when the polar day and the polar night appeared in the North Pole and the South Pole respectively. Until the summer solstice, the sun shines directly on the Tropic of Cancer, and the extreme sun phenomenon can be seen throughout the Arctic Circle; The extreme night phenomenon can be seen throughout the Antarctic circle. On the solstice of winter, the sun shines directly on the tropic of Capricorn. At this time, the whole Antarctic circle can see the extreme day phenomenon, and the whole Arctic circle can see the extreme night phenomenon.

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