Tropical year

#	Item
621	PDF Document Add to Reading List Source URL: emr.cs.iit.edu Language: English - Date: 2006-12-07 17:46:19 Moon Units of time Celestial mechanics Hebrew calendar Julian day Calendrical calculation Poya Tropical year Month Measurement Time Calendars
622	PDF Document Add to Reading List Source URL: assets.cambridge.org Language: English - Date: 2004-10-05 12:44:38 Winter holidays Calendars Stonehenge Archaeoastronomy Alexander Thom Solstice Sun Winter solstice Tropical year Astronomy Astrology Space
623	PDF Document Add to Reading List Source URL: arxiv.org Language: English - Date: 2011-12-13 20:04:34 Time scales Units of time Celestial mechanics Clocks Sidereal time Solar time Equation of time Orrery Tropical year Measurement Time Horology