See Geography 111 Lecture 5b and page 62 to 64 in the Christopherson textbook. Indicate with arrows the latitudes at which the sun is directly overhead at noon. Shade in the portion of the Earth in shadow on each date, and label which solstice each diagram represents. See page 5 in the laboratory manual and pages 51 to 55 in the Christopherson textbook. Remember, declination is positive when the location is tilted toward the sun, and negative when the location is tilted away from the sun.
Calculations involving either the winter or summer solstice dates are bit more difficult.
For Southern Hemisphere locations, summer is the December 22 Solstice and winter is the June 21 solstice. Note that this is the opposite of the conditions found in the Northern Hemisphere. The key here is approximation. Remember there are 60 temporal minutes in an hour. In the table, the information is given every ten degrees of latitude.