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On July ۸, at about ۱۱:۱۰ GMT, about ۹۹ percent of the world experiences sunlight at the same time.
Published On ۸ Jul ۲۰۲۶
Because of Earth’s tilt and the timing of the Northern Hemisphere’s summer, about ۹۹ percent of the world’s population – some ۸.۲ billion people – will experience daylight or twilight simultaneously on July ۸, at about ۱۱:۱۰ GMT.
For a brief period lasting only about a minute, Earth’s most populated areas will all be under the Sun, with only a small fraction experiencing nighttime.
Daylight will stretch across North America, South America, Europe, Africa and most of Asia, where nearly all of the world’s population lives.
In darkness will be Australia, New Zealand, parts of Southeast Asia and Antarctica, along with the surrounding oceans.
This is not a one-day-only phenomenon. For about ۶۰ days each year, from roughly May ۱۸ to July ۱۷, there is a brief moment each day during which nearly all of humanity experiences either daylight or twilight.
The phenomenon became widely associated with July ۸ following a social media post in ۲۰۲۲ claiming it was the only day this occurred, which went viral. A subsequent fact check by Time and Date found that while July ۸ is one of the dates when the overlap is greatest, similar conditions occur every day for about two months around the Northern Hemisphere summer.
How many people will experience day, twilight and night?
At the moment when sunlight reaches almost everyone on Earth, about ۶.۹ billion people (۸۳ percent) will be in full daylight.
Another ۵۸۱ million (۷ percent) will experience “civil twilight”, when the sky remains bright enough for most outdoor activities without artificial lighting.
A further ۴۹۸ million people (۶ percent) will be in nautical twilight, when the horizon is still visible but the sky is much darker, while ۲۴۹ million (۳ percent) will be in astronomical twilight, with only a faint glow left before complete darkness.
Just ۸۳ million people (۱ percent) will experience full night, when the Sun is more than ۱۸ degrees below the horizon and the sky is completely dark.
Why does this happen on July ۸ rather than the June solstice?
June solstice is the Northern Hemisphere’s longest day, and marks the beginning of summer.
After the June solstice, the Sun begins moving south. This slightly reduces daylight in sparsely populated far northern regions, but extends it further into densely populated areas such as Indonesia and the Philippines.
That small shift brings about ۱۰ million more people into daylight or twilight than on the solstice itself.
