On what days of the year is the Sun exactly above the Equator and day and night are of equal lengths?
What is solstice?
1. The time of the year when the difference between the length of days and the length of nights is the largest
2. The time when the sun is exactly over the equator
3. The time when the sun shines vertically over a Tropics
4. The two points of intersection between the elliptic and the celestial equator