On which among the following dates, Vernal equinox occurs__?
1. March 20-21
2. December 19-20
3. April 21-22
4. September 20-21
Choose the correct option from the codes given below:
[A]1 & 2
[B]2 & 3
[C]3 & 4
[D]1 & 4

1& 4
An equinox occurs twice a year (around 20 March and 22 September), when the tilt of the Earth’s axis is inclined neither away from nor towards the Sun, the center of the Sun being in the same plane as the Earth’s equator. The term equinox can also be used in a broader sense, meaning the date when such a passage happens. The name “equinox” is derived from the Latin aequus (equal) and nox (night), because around the equinox, night and day are about equal length.