Science ❯ Astronomy ❯ Celestial Events

Equinox

Spring Equinox Autumn Equinox Autumnal Equinox September Equinox Vernal Equinox Fall Equinox March Equinox Hemispherical Changes Sun Position Day and Night Equality Seasonal Changes Day-Night Equality Winter Equinox Solar Alignment Equinox Effect

Spring Starts Today as Vernal Equinox Arrives at 10:46 a.m. ET

The Sun’s crossing of the celestial equator shifts the Northern Hemisphere into steadily lengthening days.

Autumn Begins as Sun Crosses the Equator at 2:19 p.m. ET

Equinox Boosts Northern Lights Chances as NOAA Flags Minor Geomagnetic Storms

Fall Begins Monday at 2:19 p.m. EDT With the 2025 Equinox

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