equinox
/ˈiː.kwɪ.nɒks/noun
CEFR B1
Definition
One of the two days a year when day and night are of equal length.
The spring (vernal) and autumn equinoxes both mark this balance, at opposite ends of the year.
One of the two days a year when day and night are of equal length.
The spring (vernal) and autumn equinoxes both mark this balance, at opposite ends of the year.