Formation of Seasons

Discover how Earth's orbit around the Sun and its 23.5° axial tilt create the seasons.

Orbit Simulation

3x

Drag the Earth along its orbit to change its position.

Key Points

Summer Solstice (Jun 21)
Winter Solstice (Dec 21)
Vernal Equinox (Mar 20)
Autumnal Equinox (Sep 22)
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Summer
June 21 — September 22

Hemisphere

Simulation Data

DateJune 21
Orbit Angle90°
Solar Declination+23.5°
Daylight Duration~16 hours
Sun ElevationHigh

Description

At the summer solstice, the Northern Hemisphere tilts toward the Sun. Sunlight hits at a more direct angle and daylight hours reach their maximum.