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Equinox and Solstice. Equinox refers to a day with an equal duration of day and night. We have two equinoxes in a year which are: Spring equinox on March 21; Autumnal equinox on September 23; On the other hand, the solstice refers to a day with either the longest day or the shortest. The two solstices in a year are: Winter solstice on December ...
Vernal equinox (about March 21): day and night of equal length, marking the start of spring. 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.
What Is the Equinox? And What Is the Solstice? By Graham Jones. Equinoxes and solstices are a result of two things: Earth’s tilt and its orbit around the Sun.
The seasons (with the transition points of the June solstice, September equinox, December solstice, and March equinox) and Earth's orbit characteristics. For an observer at the North Pole, the Sun reaches the highest position in the sky once a year in June. The day this occurs is called the June solstice day.
Far left: June solstice. The equinoxes are the only times when the solar terminator (the "edge" between night and day) is perpendicular to the equator. As a result, the northern and southern hemispheres are equally illuminated.
Dec 21, 2023 · What is the difference between an equinox and a solstice? When the equinox occurs, as the equi-prefix might suggest, day and night are of equal length, and it marks the onset of spring (vernal equinox) and autumn (autumnal equinox).
Here’s a handy mnemonic device - equi means equal, and nox means night, which tells you that the day and the night are of equal length. So, at the end of the day, while solstices and equinoxes are related, they happen at different times of the year.
Feb 27, 2021 · Matt Rosenberg. Updated on February 27, 2021. The June and December solstices mark the longest and shortest days of the year. The March and September equinoxes, meanwhile, mark the two days of each year when day and night are of equal length.
Mar 12, 2024 · During an equinox, solar declination is 0°—the Equator—and both the Northern and Southern Hemisphere receive equal sunlight.) Sometimes, solstices are nicknamed the “ summer solstice ” and the “ winter solstice ,” although these have different dates in the Northern and Southern Hemispheres.
The Equinox in the Northern Hemisphere occurs twice a year around 20 March (the spring equinox) and around 22 September (the autumn equinox). They occur between the summer and winter...
