Science ❯ Astronomy ❯ Celestial Events

Equinox

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

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