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solstice

All the posts.

Dec. 21 is the winter solstice. We explain what this means and how the seasons come about.

December 18, 2025
The leaning Earth in its orbit around the Sun each year.

Friday is the summer solstice, the longest day of the year. We explain why.

June 16, 2025
Diagram showing Earth's tilt and the seasons

Saturday, Dec. 21 will be the winter solstice – the shortest day and longest night of the year, with which we mark …

December 19, 2024
solstice Archives - Andrew Fraknoi - Astronomy Lectures - Astronomy Education Resources