Answer:
Solstice usually refers to the condition when there occurs the longest duration of day and night and during this time the north pole of the earth is tilted at the farthest distance from the location of the sun. There are two types of the solstice, namely the summer and the winter solstice.
In the case of the northern hemisphere or the upper half of the equator, the summer solstice usually occurs in June 21st and the winter solstice occurs in December 21st.
The locations on earth where the sunlight is directly incident during the time of summer solstice are the regions lying in the tropic of cancer namely, India, Mexico, the southern portion of China and the Bahamas.