The longest day of the year for people in the northern hemisphere is A. June 22nd B. September 23rd C. 65438+February 22nd D. March 22nd 1.

Analysis of test questions: The longest day of a year for people in the northern hemisphere should be when the sun is at its lowest height at noon that day, that is, when the sun directly hits the Tropic of Capricorn, and the winter solstice in the northern hemisphere is 65438+February 22nd.

Comments: This question can also examine the basic knowledge of rotation and revolution. In the northern hemisphere, spring is March to May, summer is June to August, autumn is September to165438+1October, and winter is June to February. The months in the southern hemisphere remain the same, but the seasons are opposite. The five regions of the earth. Geographical phenomena caused by the earth's movement: alternation of day and night, morning and evening, length and change of day and night, change and shadow of the height of the sun at noon.