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Celestial mechanics / Units of time / Calendars / Astrodynamics / Celestial coordinate system / Tropical year / Axial tilt / Orbital eccentricity / Year / Astrology / Measurement / Astronomy


☼ Tropical Events: the solstices and equinoxes
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Document Date: 2010-12-05 07:59:19

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File Size: 1,78 MB

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