Science ❯ Earth Sciences

Seasons

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