Vernal Equinox 2025. The vernal equinox — is an astronomical phenomenon when the sun, in its visible motion along the ecliptic, crosses the celestial equator. In other words, on the day of the vernal equinox, day.
In the northern hemisphere, the march equinox is referred to as the vernal equinox. The vernal equinox — is an astronomical phenomenon when the sun, in its visible motion along the ecliptic, crosses the celestial equator.
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