Solar terms of the earth's revolution

(1) When the earth revolves to D, the date is around 65438+February 22nd; When the earth is in a, the solar term in the northern hemisphere is vernal equinox;

(2) The earth moves from B to D, and the moving direction of the direct point of the sun on the earth's surface is south, that is, from the Tropic of Cancer to the Tropic of Cancer.

So the answer is:

(1) 65438+February 22nd; Vernal equinox;

② heading south.