How To Use Tropical year In A Sentence
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The Romaka-Siddhanta was based on the tropical year of Hipparchus and on the Metonic cycle of 19 years.
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tropical year
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Since the lunar year is shorter than the tropical year, the lunar calendar travels all through the seasons, making a complete cycle in about 33 years.
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Instead of a January to December calendar year, the Almanac relied on a tropical year defined as running from one winter solstice to the next.
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The tropical year when the earth in its revolution passes from one equinox or tropic to the same again.
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Applying tropical year and lunation, the exchange formula of calendar and solar calendar could be derived.
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The first of these is called the sidereal year while the second is called the tropical year.
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Thus the Callippic cycle fitted 940 lunar months precisely to 76 tropical years of 365.25 days.