The longest day of 2026 is Sunday, 21 June — the summer solstice in the Northern Hemisphere, when the Sun reaches its highest point in the sky and daylight stretches to its yearly maximum. This guide explains when it happens, why, and how much daylight you'll actually get.
To see exact sunrise and sunset times for your city on any date, use our sunrise & sunset tool.
When is the longest day in 2026?
- Northern Hemisphere summer solstice: 21 June 2026 — the longest day of the year.
- Southern Hemisphere: the same date is their shortest day (winter solstice). Their longest day falls on the December solstice instead.
After 21 June, days slowly begin to shorten again in the north — losing just a minute or two at first, then more quickly toward autumn.
Why is the June solstice the longest day?
Earth is tilted on its axis by about 23.4°. Around 21 June, the Northern Hemisphere is tilted most directly toward the Sun. That means:
- The Sun rises higher and stays above the horizon longer.
- The further north you go, the more extreme it gets.
At the Arctic Circle and beyond, the Sun doesn't set at all around the solstice — the famous "midnight sun." At the equator, day length barely changes all year (always near 12 hours).
How much daylight do you get on the longest day?
Daylight on 21 June depends heavily on your latitude:
| Location | Approx. latitude | Daylight on June solstice |
|---|---|---|
| Equator (Singapore, Nairobi) | 0° | ~12 hours |
| Cairo, Delhi | ~30°N | ~14 hours |
| New York, Madrid | ~40°N | ~15 hours |
| London, Berlin | ~52°N | ~16.5 hours |
| Reykjavik | ~64°N | ~21 hours |
| Arctic Circle | 66.5°N | 24 hours (midnight sun) |
For the exact figures where you are, our sunrise/sunset page calculates day length for any city.
The four solstices and equinoxes of 2026
| Event | Date 2026 | What it marks (N. Hemisphere) |
|---|---|---|
| Spring equinox | 20 March | Day and night roughly equal |
| Summer solstice | 21 June | Longest day |
| Autumn equinox | 23 September | Day and night roughly equal |
| Winter solstice | 21 December | Shortest day |
See exact UTC times and Southern Hemisphere equivalents on our seasons page.
Solstice traditions around the world
The summer solstice has been marked for thousands of years. Crowds gather at Stonehenge in England to watch the sunrise align with the ancient stones. Scandinavia celebrates Midsummer with bonfires and feasting, and it's one of the most important holidays of the year in Sweden and Finland.
Quick answers
When is the longest day in 2026? 21 June 2026 — the Northern Hemisphere summer solstice.
Why is 21 June the longest day? Because Earth's Northern Hemisphere is tilted most toward the Sun, giving the most hours of daylight.
Is the longest day the same everywhere? No. The further from the equator, the longer the longest day. Above the Arctic Circle, the Sun never sets. South of the equator, 21 June is the shortest day.
When does the Sun set on the longest day? It varies by city and latitude — check the exact sunset time for your location on our sunrise & sunset tool.