Science ❯ Earth Sciences

Seasons

Astronomical Seasons Equinox Seasonal Changes Winter Solstice Summer Autumn Equinox Axial Tilt Climate Change Winter Solar Positioning Solar Cycles Season Lengths Tilt of the Earth Astronomy Earth's Axial Tilt Meteorological Seasons Earth's Axis

Winter Solstice Has Passed With Daylight Growing, Sunrise Still Drifting Later

A quirk of Earth’s axial tilt plus an elliptical orbit delays the earliest dawn until early January in many places.

Winter Solstice Arrives Dec. 21 as Sunsets Begin to Shift Later

Equinox Boosts Northern Lights Chances as NOAA Flags Minor Geomagnetic Storms

Canada Day Geomagnetic Storm Watch Signals Northern Lights into Lower Latitudes

Summer Solstice 2025 Arrives at 10:42 p.m. EDT Friday