Friday Is the Longest Day of the Year in the Northern Hemisphere
This article was published in 2024 and has been updated for 2025's summer solstice.
On Friday, everyone in the northern half of our planet will experience the summer solstice. It'll be the longest day of the year north of the Equator, and it is the scientific start of summer.
Earth has a solstice every six months, in June and in December. Leading up to the summer solstice, the sun appears in a higher spot in the sky at the same time each day until it reaches its maximum point.
After the summer solstice, the days will get shorter. The sun will appear lower in the sky each day until the winter solstice, on Dec. 21.
What time is the summer solstice this year?
According to the National Weather Service, the summer solstice will occur on Friday at 10:42 p.m. Eastern time (it will be Saturday, June 21, in Coordinated Universal Time). This is the moment during the day when the sun reaches its most northern point in the sky during the year.
Why do we have solstices?
The sun's height in the sky each day changes because Earth spins on an axis that is tilted 23.5 degrees away from vertical. This means that depending on the time of year the hemispheres lean either toward or away from the sun.
This is what gives Earth its seasons: When the northern half of the planet leans toward the sun, it experiences summer; at the same time, the southern half of the planet leans away from the sun, and is in winter. It is a mystery why Earth is angled this way, though some astronomers believe that its tilt paved the way for life to exist.
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New York Times
5 hours ago
- New York Times
Friday Is the Longest Day of the Year in the Northern Hemisphere
This article was published in 2024 and has been updated for 2025's summer solstice. On Friday, everyone in the northern half of our planet will experience the summer solstice. It'll be the longest day of the year north of the Equator, and it is the scientific start of summer. Earth has a solstice every six months, in June and in December. Leading up to the summer solstice, the sun appears in a higher spot in the sky at the same time each day until it reaches its maximum point. After the summer solstice, the days will get shorter. The sun will appear lower in the sky each day until the winter solstice, on Dec. 21. What time is the summer solstice this year? According to the National Weather Service, the summer solstice will occur on Friday at 10:42 p.m. Eastern time (it will be Saturday, June 21, in Coordinated Universal Time). This is the moment during the day when the sun reaches its most northern point in the sky during the year. Why do we have solstices? The sun's height in the sky each day changes because Earth spins on an axis that is tilted 23.5 degrees away from vertical. This means that depending on the time of year the hemispheres lean either toward or away from the sun. This is what gives Earth its seasons: When the northern half of the planet leans toward the sun, it experiences summer; at the same time, the southern half of the planet leans away from the sun, and is in winter. It is a mystery why Earth is angled this way, though some astronomers believe that its tilt paved the way for life to exist. Want all of The Times? Subscribe.
Yahoo
5 hours ago
- Yahoo
Summer solstice 2025 is here! Today marks the longest day of the year for the Northern Hemisphere
When you buy through links on our articles, Future and its syndication partners may earn a commission. Sunlovers rejoice, for the summer solstice is upon us, bringing the longest day of 2025 while heralding the beginning of astronomical summer in the northern hemisphere. The summer solstice occurs because of a 23.5 degree tilt in Earth's rotational axis that may have arisen when an ancient Mars-sized body slammed into our planet billions of years ago, triggering the formation of our moon. The angle of this tilt is — to all intents and purposes — consistent all year round, and is currently fixed with the north celestial pole pointing close to Polaris, the current north star. Thanks to this tilt, we experience the changing seasons, equinoxes and solstices — events that have been celebrated by cultures around the world for thousands of years. Some of humanity's most iconic ancient monuments like Stonehenge and the Mayan Chichén Itzá Pyramid were purpose built to align with these seasonal markers. In the northern hemisphere the summer solstice occurs when the sun reaches its northernmost point relative to Earth's celestial equator (which is simply our planet's regular equator projected out into space). Conversely, the winter solstice takes place when the sun is in its southernmost position relative to the celestial equator. The 2025 summer solstice arrives at 10:42 p.m. EDT on June 20 (0242 GMT June 21). On this day, skywatchers across the northern hemisphere will enjoy the longest stretch of daylight all year. In New York, for example, the sun will spend more than 15 hours beating a path through the sky. At the same time, those in the southern hemisphere will mark the winter solstice, which heralds the shortest day of 2025 below the equator. You can calculate exactly how much daylight you will experience in the days around the summer and winter solstices online using daylight tracker. Naturally this amount of sunlight makes it a challenging time of year for amateur astronomers, but that doesn't mean that the summer months aren't bursting with deep space targets and beautiful asterisms. Be sure to check out our daily guide to June's night sky to discover which targets to prioritize during those short summer nights. Editor's Note: If you find a creative way to capture the Summer Solstice and want to share it with readers, then please send your photo(s), comments, and your name and location to spacephotos@
Yahoo
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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. 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. The summer solstice will take place on Friday, June 20, at 10:42 p.m. ET, according to 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. 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." 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 USA TODAY'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. This article originally appeared on USA TODAY: Why is today the longest day of the year? Explaining summer solstice
