Consider the following statements to identify the major context of it.
1. The longest day and the shortest night occur in the northern hemisphere found on 21st June
2. On 21st March and September 23rd the areas near the equator experience the equal duration of day and night
1
Summer solstice and winter solstice
2
Winter solstice and vernal equinox
3
Summer solstice and equinox
4
Equinox and inversion of temperature