2023 Summer Solstice is this week. Here’s what to know about the first day of summer

The 2023 Summer Solstice is this week. Here’s what to know about the first day of summer
Summer is almost officially here.
The June summer solstice, which marks the official start of the season and the longest day of the year, is set to take place on Wednesday.
The summer solstice takes place at 9:58 a.m. CT Wednesday, June 21.
On that date, Chicago will see 15 hours, 13 minutes, and 41 seconds of daylight, with sunset just before 8:30 p.m.
The summer solstice is when the Sun reaches its highest and northernmost points in the sky, according to the Farmer’s Almanac.
It is also known as the day with the most prolonged period of sunlight or the longest day of the year – for those in the Northern Hemisphere.
While the solstice does not occur at the same time each year, it typically falls between June 20-22.
In astronomical terms, it is considered the first day of summer, though meteorological summer technically began at the start of the month.
Contrastingly, the winter solstice, which takes place on December 21 this year, will mark the start of winter.
“The Sun’s arc has been getting higher in the sky every day since the winter solstice, which occurred in Chicago on December 21, 2022,” Chicago’s Adler Planetarium reports. “As the Sun’s arc gets higher, daylight hours get longer. On the summer solstice, the Sun’s arc stops getting higher. After that point, the Sun’s arc will appear lower each day, and daylight hours will gradually get shorter. It will keep getting lower each day until December 21, the 2023 winter solstice in the northern hemisphere.”
According to Adler, the word solstice “means that the arc of the Sun—or Sol—stops in the sky.”
The Latin word comes from solstitium – sol, which means Sun, and titanium, which means “still or stopped,” the Almanac reports.
While the solstice marks the day with the most sunlight, it does not mark the date of the earliest sunrise or the latest sunset.
In Chicago, the earliest sunrise, usually before the solstice, was seen in June.
The latest sunset is still to come, however.
But, according to the Almanac, the Sun will set more slowly around the time of a solstice, meaning “it takes longer to set below the horizon.”
As the summer solstice arrives in the Northern Hemisphere, scientists at NASA say that a busy period of solar events is set to begin, with eclipses and several other phenomena taking place.
There will be not one but two solar eclipses in the next 12 months, and both will at least be partially visible from the Midwest.
The first will take place on October 14, 2023. While a total eclipse will take place across parts of the southwestern United States, a partial eclipse will also be visible across the Midwest, with about 50% coverage over western Illinois and slightly-less coverage over parts of the Chicago area.
From an eclipse perspective, the main event will take place on April 8 of next year, with a total solar eclipse visible across a wide swath of the Midwest. While that will not occur in Chicago, large portions of Indiana, including Indianapolis, will see the total eclipse, lasting several minutes in the afternoon.
Finally, NASA says that the Sun is reaching the peak of an 11-year solar cycle, which could cause a variety of impacts in the coming months.
Every 11 years, the Sun’s magnetic field flips. These flips can cause dramatic changes in activity on the Sun’s surface, with solar flares and coronal mass ejections potentially impacting Earth in various ways.
The Northern Lights can become more pronounced and visible in new locations during those times, and radio communications and even electricity grids can be impacted on Earth. “The Sun’s arc has been getting higher in the sky every day since the winter solstice, which occurred in Chicago on December 21, 2022,” Chicago’s Adler Planetarium reports. “As the Sun’s arc gets higher, daylight hours get longer. On the summer solstice, the Sun’s arc stops getting higher. After that point, the Sun’s arc will appear lower each day, and daylight hours will gradually get shorter. It will keep getting lower each day until December 21, the 2023 winter solstice in the northern hemisphere.”
According to Adler, the word solstice “means that the arc of the Sun—or Sol—stops in the sky.”
The Latin word comes from solstitium – sol, which means Sun, and titanium, which means “still or stopped,” the Almanac reports.

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