Solstice - Wikipedia
A solstice is the time when the Sun reaches its most northerly or southerly excursion relative to the celestial equator on the celestial sphere. Two solstices occur annually, around 20–22 June and 20–22 December. In many countries, the seasons of the year are defined by reference to the solstices and the equinoxes.
Solstice | Definition & Facts | Britannica
2024年12月17日 · Solstice, either of the two moments in the year when the Sun’s apparent path is farthest north or south from Earth’s Equator. In the Northern Hemisphere the summer solstice occurs on June 20 or 21 and the winter solstice on December 21 or 22.
Solstice - National Geographic Society
2024年3月12日 · A solstice is an event in which a planet ’s poles are most extremely inclined toward or away from the star it orbits. On our planet, solstices are defined by solar declination —the latitude of Earth where the sun is directly overhead at noon.
What's the Difference Between a Solstice and an Equinox?
Summer solstice (June 20 or 21): longest day of the year, marking the start of summer; Autumnal equinox(about September 23): day and night of equal length, marking the start of autumn; Winter solstice (December 21 or 22): shortest day of the year, marking the start of winter
Longest night of the year: What to know about the winter solstice
2024年12月20日 · The solstice occurs at the same time everywhere on Earth, this year it happens Dec. 21 at 4:21 a.m. EST. For the Northern Hemisphere, it marks the astronomical start of winter because the North ...
What Is the Equinox? And What Is the Solstice? - timeanddate.com
Equinoxes and solstices are a result of two things: Earth’s tilt and its orbit around the Sun. Earth, like nearly all the planets, orbits the Sun in a tilted fashion. Earth spins once a day on its axis of rotation, an imaginary line running through the North and South Poles.
What is the winter solstice? - CBS News
2024年12月21日 · The 2024 winter solstice, the shortest day of the year, happens on Saturday, Dec. 21, and is marked with traditions and celebrations around the world.
Solstice - Simple English Wikipedia, the free encyclopedia
A solstice is an astronomical event that happens twice each year when the Sun reaches its highest position in the sky as seen from the North or South Pole.
Solstice Definition & Meaning - Merriam-Webster
The meaning of SOLSTICE is either of the two points on the ecliptic at which its distance from the celestial equator is greatest and which is reached by the sun each year about June 21 and December 21.
What Is a Solstice? | NOAA SciJinks – All About Weather
2024年12月5日 · The solstice days are the days with the most (for Summer) or fewest (for Winter) hours of sunlight during the whole year. The sun is directly overhead at "high-noon" on Summer Solstice in the Northern Hemisphere at the latitude called the Tropic of Cancer.