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the claim
Mayan astronomical ephemerides achieve high precision
the verdict
INSUFFICIENT LEANING
refutedsupported
the weight of evidence
4 sources for · 0 against
AS REPORTEDno primary record reached; this is what the reporting says

Retrieved studies indicate that Maya codices and inscriptions contain sophisticated records of celestial cycles such as Venus, Mars, and seasonal years, but they offer partial evidence regarding high numerical precision in ephemerides.

Evidence for · 4
MAYA ASTRONOMICAL OBSERVATIONS AND THE AGRICULTURAL CYCLE IN THE POSTCLASSIC MADRID CODEX | Ancient Mesoamerica | Cambridge Core
cited by 0
MAYA ASTRONOMICAL OBSERVATIONS AND THE AGRICULTURAL CYCLE IN THE POSTCLASSIC MADRID CODEX | Ancient Mesoamerica | Cambridge Core Cambridge Core homepage Search Cambridge Core homepage --- Institution Login Search Hostname: page-component-5db58dd55d-qmkzp Total loading time: 0 Render date: 2026-07-09T08:53:49.971Z Has data issue: false hasContentIssue false - English - Français # MAYA ASTRONOMICAL OBSERVATIONS AND THE AGRICULTURAL CYCLE IN THE POSTCLASSIC MADRID CODEX Published online by Cambridge University Press: 08 December 2017 Show author details --- * E-mail correspondence to: milbrath@flmnh.ufl.edu --- Article contents - Abstract - References Get access Share Cite Rights & Permissions --- ## Abstract Research presented here demonstrates that an unusual almanac in the Madrid Codex (pages 12–18) integrates observations of the Venus cycle with eclipse events in the context of the agricultural year. Imagery in the 260-day almanac represents eclipse glyphs associated with Tzolkin dates that coordinate with eclipses visible in Yucatan during the fifteenth century, indicating the almanac dates to the Late Postclassic. The almanac also depicts seasonal events i
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The analysis

rails:sufficiency:partial_only:for=0+3p:against=0+0p | v55:multi_partial_one_side:lean=lean_partial:for:one_sided

More for · 3
Ancient Maya documents concerning the movements of Mars - PMC
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Ancient Maya documents concerning the movements of Mars - PMC Proc Natl Acad Sci U S A . 2001 Feb 13;98(4):2107–2110. doi: 10.1073/pnas.98.4.2107 # Ancient Maya documents concerning the movements of Mars *,†, Anthony F Aveni ‡, Victoria R Bricker * - Author information - Article notes - Copyright and License information *Department of Anthropology, Tulane University, 1021 Audubon Street, New Orleans, LA 70118; and ‡Department of Physics and Astronomy, Colgate University, 13 Oak Drive, Hamilton, NY 13346 † To whom reprint requests should be addressed. E-mail: hbricker@tulane.edu. Contributed by Victoria R. Bricker Accepted 2000 Dec 11. Copyright © 2001, The National Academy of Sciences PMCID: PMC29390 PMID: 11172084 ## Abstract A large part of the pre-Columbian Maya book known as the Dresden Codex is concerned with an exploration of commensurate relationships among celestial cycles and their relationship to other, nonastronomical cycles of cultural interest. As has long been known, pages 43b–45b of the Codex are concerned with the synodic cycle of Mars. New work reported here with another part of the Codex, a complex table on pages 69–74, reveals a concern on the par
Maya Observations of Very Long Periods of Venus
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Maya Observations of Very Long Periods of Venus - Stephen C. McCluskey, 1983 [Skip to main content](#skipNavigationTo) Intended for healthcare professionals [![Sage Journals Home](https://journals.sagepub.com/pb-assets/UX3/Images/logo-new-1685528515400.svg%20)](https://journals.sagepub.com/) [Search this journal**](#) * [Search this journal](#pane-91a67f5d-48d7-493e-912e-2af5faaaceef0) * [Search all journals](#pane-91a67f5d-48d7-493e-912e-2af5faaaceef1) Enter search terms... SearchSearch**[Advanced search](https://journals.sagepub.com/search/advanced?SeriesKey=jhaa) Enter search terms... SearchSearch**[Advanced search](https://journals.sagepub.com/search/advanced?SeriesKey=jhaa) * [****Search](#) * [****Access/ProfileAccess](#) * [View access options](https://journals.sagepub.com/action/showLogin?uri=/doi/10.1177/002182868301400202) * [View profile](https://journals.sagepub.com/action/showLogin?uri=/doi/10.1177/002182868301400202) * [Create profile](https://journals.sagepub.com/action/registration) * [ **Cart0 ](https://journals.sagepub.com/action/showCart?FlowID=1&alt=Empty+cart) [Close Drawer MenuOpen Drawer MenuMenu](#main1) [Journal for the History of Astronomy](https://journal
Measuring deep time: the Sidereal Year and the Tropical Year in Maya inscriptions
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Measuring deep time: the Sidereal Year and the Tropical Year in Maya inscriptions | Proceedings of the International Astronomical Union | Cambridge Core # Measuring deep time: the Sidereal Year and the Tropical Year in Maya inscriptions Published online by Cambridge University Press: 26 July 2011 Michael J. Grofe Michael J. Grofe* Affiliation: Department of Anthropology, American River College, 4700 College Oak Drive, Sacramento, CA 95841, USA email: grofem@arc.losrios.edu ## Abstract Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the 'Save PDF' action button. Maya inscriptions contain numerous examples of long intervals of time that count both backward and forward from a fixed point of historical reference to specific mythological dates, often thousands of years in the past or future. This paper considers the evidence that these intervals incorporated precise calculations of both the sidereal year and the tropical year. Furthermore, it outlines a specific methodology for assessing the likelihood that these distance numbers were either intentionally calculated to incorporate these ast
Everything we examined (4) — 3 independent sources
This check searched the claim as stated. It did not run a separate search for evidence against it.
  1. MAYA ASTRONOMICAL OBSERVATIONS AND THE AGRICULTURAL CYCLE IN THE POSTCLASSIC MADRID CODEX | Ancient Mesoamerica | Cambridge Corereferencesame source L12no side taken
  2. Ancient Maya documents concerning the movements of Mars - PMCreferenceno side taken
  3. Maya Observations of Very Long Periods of Venusreferenceno side taken
  4. Measuring deep time: the Sidereal Year and the Tropical Year in Maya inscriptionsreferencesame source L12no side taken
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