In summer, why does it get dark slowly?

It is precisely because of the rotation and revolution of the earth that the day we perceive is actually the time of dawn, and this time of dawn is determined by the sun. When we face the sun, the sky is bright, but we keep our autobiography. When he turned to the side facing away from the sun, the sky gradually darkened. In addition to rotation, the earth is still rotating. In summer, the angle of the earth facing the sun is relatively large, so the daytime is long. In winter, the opposite is true.

This is an answer I copied from a netizen, but because he is anonymous, I can't write the name of the original respondent.