On which date does the autumnal equinox occur in the Northern Hemisphere?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 23 September
On an equinox the direct rays of the Sun fall on the Equator and day and night are equal everywhere. In the Northern Hemisphere the equinox of 23 September marks the start of autumn; the one on 21 March marks spring.