Astronomically speaking, the March equinox occurs when the Sun crosses the celestial equator on its
Astronomically speaking, the March equinox occurs when the Sun crosses the celestial equator on its way north along the ecliptic. In the Northern Hemisphere, the March equinox is known as the vernal, or spring, equinox, and marks the start of the spring season. -- source link
#spring#vernal#equinox