Seasonal Daylight Comparison
Compare daylight hours across all four seasons for any latitude.
How It Works
Enter your latitude to compare daylight hours on the summer solstice, winter solstice, spring equinox, and autumn equinox. See how dramatically daylight shifts with the seasons.
Formula
Compare solstice and equinox day lengths at your latitude
Frequently Asked Questions
How much do daylight hours vary by season?
At latitude 45 degrees north, daylight ranges from about 9 hours in winter to 15 hours in summer. At 60 degrees north the range is roughly 6-18 hours.
Do equinoxes have exactly 12 hours of daylight?
Near the equinox, day and night are approximately equal but not exactly 12 hours everywhere due to atmospheric refraction and the size of the solar disk.