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The solunar theory is a hypothesis that fish and other animals move according to the location of the moon in comparison to their bodies. [1] The theory was laid out in 1926 by John Alden Knight, but was said to be used by hunters and fishermen long before the time it was published.
His major works were astronomical tables made for Śaka 1500 (Sunday, April 9, 1578 CE) and Śaka 1505 (AD 1583). His treatise Kheṭakasiddhi (1578) contains rules for determining the positions of the five planets based on the Brahmatulya of Bhāskara II. The Candrārkī has tables on solar and lunar movement.
As is generally the case with calendar systems, the Chinese calendars tend to focus on basic calendar functions, such as the identification of years, months, and days according to astronomical phenomena and calculations, with a special effort to correlate the solar and lunar cycles experienced on earth—an effort which is known to ...
This is a list of sites where claims for the use of archaeoastronomy have been made, sorted by country.. The International Council on Monuments and Sites (ICOMOS) and the International Astronomical Union (IAU) jointly published a thematic study on heritage sites of astronomy and archaeoastronomy to be used as a guide to UNESCO in its evaluation of the cultural importance of archaeoastronomical ...
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The Islamic calendar is a purely lunar calendar and has a year, whose start drifts through the seasons and so is not a solar calendar. The Maya Tzolkin calendar, which follows a 260-day cycle, has no year, therefore it is not a solar calendar. Also, any calendar synchronized only to the synodic period of Venus would not be solar.
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In astronomy and celestial navigation, an ephemeris (/ ɪ ˈ f ɛ m ər ɪ s /; pl. ephemerides / ˌ ɛ f ə ˈ m ɛr ɪ ˌ d iː z /; from Latin ephemeris 'diary', from Ancient Greek ἐφημερίς (ephēmerís) 'diary, journal') [1] [2] [3] is a book with tables that gives the trajectory of naturally occurring astronomical objects and artificial satellites in the sky, i.e., the position ...