Science ❯ Astronomy

Seasons

Equinox Winter Solstice Equinoxes Spring Winter Solstices Seasonal Changes Summer Solstice Autumn Summer Astronomical Seasons Solstice Meteorological Seasons Daylight Variation Autumnal Equinox Vernal Equinox Earth's Seasons Equinoxes and Solstices Solstices and Equinoxes Northern Hemisphere Spring and Autumn Daylight Hours Spring Equinox

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.

Winter Solstice Arrives Sunday at 10:03 a.m. EST, Marking Year’s Shortest Day

Winter Solstice Arrives Sunday at 3:03 p.m. GMT, Marking Year’s Shortest Day

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