| 21. | According to the Watch Tower Society, astronomical calculations based on ancient writings are unreliable and prone to error.
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| 22. | Aryabhata used this number system for representing both small and large numbers in his mathematical and astronomical calculations.
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| 23. | The country also uses the Umm al-Qura calendar, based on astronomical calculations, but this is restricted to administrative purposes.
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| 24. | Its most well-known proponent was Tycho Brahe, who used it extensively for astronomical calculations such as those described above.
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| 25. | The original form of this calendar would have determined Easter using precise astronomical calculations based on the meridian of Jerusalem.
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| 26. | Urban may have rather viewed Heliocentrism as a potentially dangerous or rash doctrine that nevertheless had utility in astronomical calculations.
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| 27. | Astronomical calculations in the " Shatapatha Brahmana " ( c . 6th century BCE ) use a fractional approximation of.
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| 28. | The heated debate regarded how to make astronomical calculations to determine an auspicious date when the emperor could start a journey.
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| 29. | Also, Jean Meeus has written a number of books on astronomical calculations for amateurs which you might find at your library.
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| 30. | He thinks North American Muslims should use astronomical calculations to set dates well in advance, the way Jews and Christians do.
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