What’s vernal equinox ?
The vernal equinox, which means the beginning of spring in
the northern language, is the moment when the Sun is
Exactly above the equator and the day and the night are
of equal periods.
There‘re 2 vernal equinox in a year: March‘s vernal equinox
Which marks the first day of spring and September’s vernal
equinox which marks the first day of autumn.
