Is today the longest day of the year? What to know about summer solstice.
The longest day of the year, and the official start of summer, has arrived in the U.S.
The summer solstice takes place Friday, June 20, and will be both the longest day and shortest night of 2025 in the Northern Hemisphere, according to the National Weather Service (NWS).
Recognized as a day of extra sunlight that ushers in warmer weather to come, the solstice is also celebrated in multiple cultures and religions. It marks the start of the Pagan holiday Litha, also known as Midsummer, which is famously celebrated at the ancient Stonehenge ruins in Wiltshire, England, where many gather to herald the season.
Here's what to know about the solstice.
What is the summer solstice?
The summer solstice marks the beginning of summer in the Northern Hemisphere and the longest day of the year. Meanwhile, the Southern Hemisphere will greet winter with its winter solstice.
When is the summer solstice?
The summer solstice will take place on Friday, June 20, at 10:42 p.m. ET, according to Space.com. The solstice itself only lasts moments, according to the Old Farmer's Almanac.
The date of the summer solstice can fall at any point between June 20 and June 22, depending on the year.
Why is the summer solstice the longest day of the year?
During the summer solstice, the Earth's tilt brings our planet's northernmost point closer to the sun, resulting in more hours of sunlight and fewer hours of night.
"The Northern Hemisphere's tilt toward the Sun is greatest on this day," according to NASA. "This means the Sun travels its longest, highest arc across the sky all year for those north of the equator."
Solstice marks time of celebration for some
Several locations around the world are particularly known for celebrating the solstice, including Newgrange in Ireland. Solstices are often associated with pagan religions and draw revelers of different faiths.
Pagans come by the thousands to Stonehenge, the prehistoric ruins of a monument built between approximately 3100 and 1600 BC in Wiltshire, England. It is one of the most famous landmarks in the U.K., but little is known about the civilization that built it or why, as these ancient peoples left no written records behind.
It was during the 20th century that Stonehenge became a site of religious significance to people who subscribed to New Age beliefs, including Neopaganism and Neo-Druids, according to Paste BN's previous reporting. When constructed, the stone circle was aligned with the sun, and to this day, thousands of people gather to witness the moment the sun peeks perfectly through its pillars.