Answer: (1) Write down that the revolution of the earth to A and B are two solar terms in the northern hemisphere, and their corresponding dates are

(1)A is the summer solstice, around June 22nd; B is the winter solstice, around 65438+February 22nd.

(2) When the earth revolves to vernal equinox, the latitude of direct sunlight is 0.

(3) The direction of the earth's revolution around the sun is from west to east.

So the answer is:

(1) June 22nd; 65438+February 22nd;

(2) 0 parallel;

(3)