Solstice or Equinox? Here’s What Sets Them Apart
Solstice or Equinox? Here’s What Sets Them Apart
US · Published Sep 7, 2025
Equinoxes feature roughly equal day and night, while solstices mark the longest and shortest days of the year.
Solstices and equinoxes are caused by Earth's tilt, affecting how sunlight reaches different hemispheres.
The Northern Hemisphere's winter solstice occurs around December 21, signaling the start of winter and the shortest day.
Astronomical events marking transitions in Earth's seasons
Solstices and equinoxes are astronomical events that mark significant transitions in the Earth's seasons. Both phenomena are a direct result of the Earth's axial tilt of approximately 23.5 degrees relative to its orbit around the Sun. This tilt is responsible for the changing angles at which sunlight strikes different parts of the Earth throughout the year, leading to variations in temperature and day length. However, while both are related to the Earth’s tilt, they differ significantly in terms of daylight patterns.
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