12/8/2023 0 Comments 2022 summer equinox![]() There are four more special circles of latitude that have a unique relationship with solstices. The reference plane for all circles of latitude is the equatorial circle of latitude that bisects the Earth perpendicular to its axis of rotation. EST)Ĭircles of latitude are imaginary east-to-west circles that connect all places with the same latitude. In the Southern Hemisphere, it will occur on December 22 at 03:28 GMT (December 21, 10:28 p.m. In the Northern Hemisphere, the 2023 summer solstice will occur on June 21 at 14:58 GMT (10:58 a.m. In the Southern Hemisphere, it will occur on June 21 at 14:58 GMT (10:58 a.m. In the Northern Hemisphere, the 2023 winter solstice will occur on December 22 at 03:28 GMT (December 21, 10:28 p.m. The next time the solstice falls on December 23 is in the year 2303 the next December 20 solstice is in the year 2080, but that doesn’t prevent many articles from claiming that December solstices fall on December 21 or 22. This century, there are five solstices on December 20, 82 solstices on December 21, and 13 solstices on December 22. The second solstice of a year happens between December 20 and 23.The next time the solstice falls on June 22 is in the year 2203 the next June 19 solstice is in the year 2488. That’s why most sources say that June solstices fall on June 20 or 21. This century, there are 47 solstices on June 20 and 53 solstices on June 21. The first one occurs between June 19 and 22.The summer solstice marks the longest day of the year and the start of summer. The Sun’s vertical overhead rays progress to their southernmost position at the 23.5°S latitude. This day is the summer solstice in the Southern Hemisphere. ![]() Six months later, the South Pole becomes inclined about 23.5° toward the Sun. Because the Sun’s rays are shifted northward from the Equator by the same amount, the vertical noon rays are directly overhead at the 23.5°N latitude. When the summer solstice happens in the Northern Hemisphere, the North Pole is tilted about 23.5° toward the Sun. The winter solstice marks the shortest day of the year and the start of winter. The Sun’s vertical overhead rays progress to their northernmost position at the 23.5°N latitude. This day is the winter solstice in the Southern Hemisphere. Six months later, the South Pole becomes inclined about 23.5° away from the Sun. The Sun’s rays are shifted southward from the Equator by the same amount so that the vertical noon rays are directly overhead at the 23.5°S latitude. When the winter solstice happens in the Northern Hemisphere, the North Pole is tilted about 23.5° away from the Sun. In the Southern Hemisphere, winter solstices happen in June, and summer solstices in December. In the Northern Hemisphere, winter solstices happen in December, and summer solstices in June. This continues until the winter solstice when the Sun starts to climb again. On the summer solstice, this gradual lengthening of days stops, and from then on, the Sun rises lower and lower at noon each day, and the days shorten. From the winter solstice to the summer one, the Sun gradually climbs higher in the sky at noon, spending a little bit more time above the horizon each day. There are two solstices each year: winter solstice and summer solstice. Although a solstice is actually defined as an exact instant on a particular day, it’s still correct to talk about solstices in terms of days. The moment when the Sun reaches its most northerly or southerly excursion from the celestial equator is called a solstice. Solstices occur because the Earth’s axis of rotation is tilted at about 23.5° relative to the Earth’s orbit around the Sun.
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