Summer equinox definition1/12/2024 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. How long is the longest day of the year 2023?.The shortest day of the year 2023, how long is it?.Why is the hottest time not during the summer solstice?. ![]()
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