Why can't we share a room on the summer solstice? Believe it or not?

The summer solstice is only one of the 24 solar terms artificially set, and it is unscientific and unreliable to say that you can't share a room during the summer solstice.

The midsummer solstice solar term is when the sun moves to 90 degrees of the yellow meridian, usually on June 2 1 ~ 22 of the Gregorian calendar. On the solstice of summer, the sun shines directly on the Tropic of Cancer. At this time, the daytime in all parts of the northern hemisphere is the longest in the whole year, and the higher the latitude, the longer the daytime. For the Tropic of Cancer and its northern area, the summer solstice is also the highest day of the year at noon.

Therefore, the summer solstice is only a phenomenon caused by the earth's rotation, and it is artificially designated as the summer solstice, regardless of whether it is shared or not.

Extended data:

The summer solstice is the northernmost day of the sun in a year, the limit of the sun's northward movement and the longest day in the northern hemisphere. The higher the latitude, the longer the days. This is because the "long day and short night effect" caused by the tilt of the earth's rotation axis is more obvious as it approaches two levels.

On the day of the summer solstice, except the south pole of the Antarctic circle and the polar night area, the sunrise direction in all parts of the earth starts from the northeast and sets in the northwest.

The summer solstice is the northernmost day of the sun in a year and the limit of the sun's northward movement. On this day, the northern hemisphere gets the most solar radiation, almost twice as much as the southern hemisphere. After the summer solstice, the Tropic of Cancer and its northern region, the midday sun altitude angle also began to decrease.

Baidu encyclopedia-summer solstice