Why does it get dark so early in summer? Is there something wrong with the earth?

The landlord means it gets dark earlier than a month or two ago.

This is caused by the revolution of the earth, which revolves around the sun, and the direct point of the sun to the earth is constantly changing, changing between the tropic of cancer.

From March 2/KLOC-0 to June 22, the direct point of the sun moved from the equator to the Tropic of Cancer. At this time, the days are getting longer and longer north of the Tropic of Cancer, and the sun is getting later and later. June 22nd is the longest day in a year.

From June 22 to September 23, the direct point of the sun moved from the Tropic of Cancer to the north of the Tropic of Cancer, and the days became shorter and shorter, but generally the days were longer than the nights.

Is that what you mean?