In which solar terms will there be extreme night in the Antarctic circle?

A. beginning of spring

B. Summer solstice (correct answer)

C. autumnal equinox

D. winter solstice

The revolution direction of the earth is from west to east. When the sun shines directly on the tropic of Capricorn, this day is called the winter solstice, that is, 65438+February 22. In the northern hemisphere, the days are short and the nights are long, and the phenomenon of extreme night exists in the Arctic Circle, but it is the opposite in the southern hemisphere. When the sun shines directly on the tropic of cancer, this day is called the summer solstice on June 22. In the northern hemisphere, the days are long and the nights are short, and the Arctic Circle has extreme days, but in the southern hemisphere, the opposite is true.