Solstice (English Wikipedia)

Cleomedes (2004). Cleomedes' Lectures on Astronomy: A Translation of The Heavens. Translated by Alan C. Bowen and Robert B. Todd. Berkeley: University of California Press. p. 41. ISBN 0-520-23325-5. This translation cites this passage at the end of Book I Chapter 2 but other arrangements have it at the start of Chapter 3. In the Greek version of Cleomedes (1891). Ziegler, Hermann (ed.). Cleomedis De motu circulari corporum caelestium libri duo. B. G. Teubneri. pp. 32. the passage starts Chapter 4.
Meeus, Jean (1998). Astronomical Algorithms (Second English ed.). Richmond: Willmann-Bell, Inc. pp. 177–182. ISBN 0-943396-61-1.

astropixels.com

"Solstices and Equinoxes: 2001 to 2100". AstroPixels.com. February 20, 2018. Retrieved December 21, 2018.

"Winter Solstice Sunrise Observance at Cahokia Mounds". Collinsville Chamber of Commerce. Retrieved December 20, 2017.

Exton, Harold (1992). "A Fresh Analysis of Some Recent Data on Atmospheric Refraction Near the Horizon with Implications in Archaeoastronomy". Journal of History of Astronomy, Archaeoastronomy Supplement. 23 (17): S57. Bibcode:1992JHAS...23...57E. doi:10.1177/002182869202301707. S2CID 118484271.
Hugh, Thurston (2001). "Early Greek Solstices and Equinoxes". Journal for the History of Astronomy. 32, Part 2 (107): 154–156. Bibcode:2001JHA....32..154T. doi:10.1177/002182860103200208. ISSN 0021-8286. S2CID 118464897.

Kent, April Elliott (June 7, 2011). The Essential Guide to Practical Astrology. Penguin. p. 284. ISBN 978-1-61564-093-5. Retrieved December 9, 2015.
Bass, Charles O. (1994). Astronomy Essentials. Research & Education Assoc. p. 35. ISBN 978-0-87891-965-9. Retrieved December 9, 2015.
Kiddle, Henry (1877). A new manual of the elements of astronomy, descriptive and mathematical: comprising the latest discoveries and theoretic views : with directions for the use of the globes, and for studying the constellations. Ivison, Blakeman, Taylor, & Company. p. 82. Retrieved June 2, 2011.
Jain, R.K. ICSE Geography. Ratna Sagar. p. 25. ISBN 978-81-8332-579-0. Retrieved December 9, 2015.
Stewart, Alexander (1869). A Compendium of ModernGeography. Edinburgh: Oliver & Boyd. p. 383. Retrieved December 9, 2015.

"Visitors Guide to the Woodhenge". Archived from the original on December 22, 2017. Retrieved December 19, 2017.

Exton, Harold (1992). "A Fresh Analysis of Some Recent Data on Atmospheric Refraction Near the Horizon with Implications in Archaeoastronomy". Journal of History of Astronomy, Archaeoastronomy Supplement. 23 (17): S57. Bibcode:1992JHAS...23...57E. doi:10.1177/002182869202301707. S2CID 118484271.
Hugh, Thurston (2001). "Early Greek Solstices and Equinoxes". Journal for the History of Astronomy. 32, Part 2 (107): 154–156. Bibcode:2001JHA....32..154T. doi:10.1177/002182860103200208. ISSN 0021-8286. S2CID 118464897.

"Welcome the Fall Equinox at Cahokia Mounds". Illinois Department of Natural Resources. Retrieved November 25, 2024.

For an introduction to these topics of astronomy refer to Bowditch, Nathaniel (2002). The American Practical Navigator: an Epitome of Navigation (PDF). Bethesda, Maryland: National Geospatial-Intelligence Agency. Chapter 15 "Navigational Astronomy". Archived from the original (PDF) on February 8, 2016. Retrieved December 9, 2015.

Exton, Harold (1992). "A Fresh Analysis of Some Recent Data on Atmospheric Refraction Near the Horizon with Implications in Archaeoastronomy". Journal of History of Astronomy, Archaeoastronomy Supplement. 23 (17): S57. Bibcode:1992JHAS...23...57E. doi:10.1177/002182869202301707. S2CID 118484271.
Hugh, Thurston (2001). "Early Greek Solstices and Equinoxes". Journal for the History of Astronomy. 32, Part 2 (107): 154–156. Bibcode:2001JHA....32..154T. doi:10.1177/002182860103200208. ISSN 0021-8286. S2CID 118464897.

Mollerup, Asger (January 12, 2008). "Solstice Determination based on Observations". Archived from the original on February 11, 2009. Retrieved September 27, 2010.

For an introduction to these topics of astronomy refer to Bowditch, Nathaniel (2002). The American Practical Navigator: an Epitome of Navigation (PDF). Bethesda, Maryland: National Geospatial-Intelligence Agency. Chapter 15 "Navigational Astronomy". Archived from the original (PDF) on February 8, 2016. Retrieved December 9, 2015.
"Visitors Guide to the Woodhenge". Archived from the original on December 22, 2017. Retrieved December 19, 2017.
"Cahokia Mounds Mark Spring Equinox : The keepers of Cahokia Mounds will host a spring gathering to celebrate the vernal equinox". Indian Country Today. Indian Country Media Network. Archived from the original on December 22, 2017. Retrieved December 20, 2017.
Mollerup, Asger (January 12, 2008). "Solstice Determination based on Observations". Archived from the original on February 11, 2009. Retrieved September 27, 2010.

Hugh, Thurston (2001). "Early Greek Solstices and Equinoxes". Journal for the History of Astronomy. 32, Part 2 (107): 154–156. Bibcode:2001JHA....32..154T. doi:10.1177/002182860103200208. ISSN 0021-8286. S2CID 118464897.