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Many ancient monuments in Europe especially, as well as parts of the Middle East, Asia and the Americas, are aligned with the sunrise or sunset on the summer solstice (see archaeoastronomy). [ 9 ] [ 10 ] The significance of the summer solstice has varied among cultures, but most recognize the event in some way with holidays , festivals , and ...
The 2021 Southern Modified Auto Racing Teams was the 17th season of the SMART Modified Tour, and the first full season since 2004 (there were four races held by the series in 2020 due to the COVID-19 pandemic). It began with the Smart Chevrolet 99 at Caraway Speedway on March 14. It ended with the Rodney Cook Classic at Ace Speedway on October 23.
For a brief period lasting approximately four days, both North and South Poles are in daylight. [c] For example, in 2021 sunrise on the North Pole is 18 March 07:09 UTC, and sunset on the South Pole is 22 March 13:08 UTC. Also in 2021, sunrise on the South Pole is 20 September 16:08 UTC, and sunset on the North Pole is 24 September 22:30 UTC ...
22. 17:37. 21. 14:14. 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.
The September equinox (or southward equinox) is the moment when the Sun appears to cross the celestial equator, heading southward. Because of differences between the calendar year and the tropical year, the September equinox may occur from September 21 to 24. At the equinox, the Sun as viewed from the equator rises due east and sets due west.
The June solsticeis the solsticeon Earth that occurs annually between 20 and 22 June according to the Gregorian calendar. In the Northern Hemisphere, the June solstice is the summer solstice(the day with the longest period of daylight), while in the Southern Hemisphereit is the winter solstice(the day with the shortest period of daylight).
The Persian calendar begins each year at the northward equinox, observationally determined at Tehran. [15] The Indian national calendar starts the year on the day next to the vernal equinox on 22 March (21 March in leap years) with a 30-day month (31 days in leap years), then has 5 months of 31 days followed by 6 months of 30 days. [15]
Sun path, sometimes also called day arc, refers to the daily and seasonal arc -like path that the Sun appears to follow across the sky as the Earth rotates and orbits the Sun. The Sun's path affects the length of daytime experienced and amount of daylight received along a certain latitude during a given season.