See how many hours of daylight any city gets on any date. Compare dates, view monthly curves, and find solstice info.
What is Daylight Hours Calculator?
How many hours of light does your city get? Our Daylight Hours Calculator shows precise daylight duration with a beautiful animated circular clock (gold for day, dark blue for night), date comparison showing daylight differences, monthly daylight curve chart with solstice and equinox markers, and fun facts about the longest and shortest days of the year.
How to Use
Search for your city
Select a date to check daylight hours
View the animated circular daylight clock
Compare two dates to see the difference
Check the monthly daylight curve chart
Frequently Asked Questions
Why do daylight hours change?
Earth's axial tilt causes different parts of the planet to receive varying amounts of sunlight throughout the year, creating seasons and changing day lengths.
When is the longest day?
The summer solstice (around June 21 in the Northern Hemisphere, December 21 in the Southern) has the most daylight hours.
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Related: daylight hours, hours of daylight, day length, daylight duration, longest day, shortest day, solstice, equinox