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The Sun moves too slowly or appears to stand still (the meaning of "solstice"). However, by use of astronomical data tracking, the precise timing of its occurrence is now public knowledge. The precise instant of the solstice cannot be directly detected (by definition, people cannot observe that an object has stopped moving until it is later ...
Greek aphrike (*ἀφρίκη) "without cold". This was proposed by historian Leo Africanus (1488-1554), who suggested the Greek word phrike (φρίκη, meaning "cold and horror"), combined with the negating prefix "a-", thus
The December-solstice solar year is the solar year based on the December solstice. It is thus the length of time between adjacent December solstices. The length of the December-solstice year has been relatively stable between 6000 BC and AD 2000, in the range of 49 minutes 30 seconds to 50 minutes in excess of 365 days 5 hours.
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.
Relationship of Earth's axial tilt (ε) to the tropical and polar circles. The Arctic Circle is the southernmost latitude in the Northern Hemisphere at which the centre of the Sun can remain continuously above or below the horizon for twenty-four hours; as a result, at least once each year at any location within the Arctic Circle the centre of the Sun is visible at local midnight, and at least ...
The last cold episode of the last glacial period ended about 10,000 years ago. [4] Earth is currently in an interglacial period of the Quaternary , called the Holocene . [ 5 ] The glaciations that occurred during the glacial period covered many areas of the Northern Hemisphere.
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This is a list of fictional countries from published works of fiction (books, films, television series, games, etc.). Fictional works describe all the countries in the following list as located somewhere on the surface of the Earth as opposed to underground, inside the planet, on another world, or during a different "age" of the planet with a different physical geography.