Terms of Service

Last updated: September 15, 2026

Welcome to MayaSkies.net.

These Terms of Service govern your access to and use of MayaSkies.net, including its articles, educational materials, calculators, interactive tools, graphics, databases, and other features made available through the website.

By accessing or using MayaSkies.net, you agree to these Terms. If you do not agree with them, please discontinue use of the website.

1. About MayaSkies.net

MayaSkies.net is an independent educational publication focused on subjects including Maya astronomy, calendars, mathematics, archaeology, architecture, cosmology, archaeoastronomy, cultural history, and digital heritage.

The website may provide:

  • educational articles and reference materials;
  • Maya calendar information;
  • date and calendar converters;
  • mathematical calculators;
  • Maya numeral tools;
  • diagrams and visualizations;
  • archaeological and historical explanations;
  • research references;
  • interactive educational resources; and
  • links to external sources.

Content and features may be added, modified, replaced, or removed over time.

2. Educational Purpose

Information provided through MayaSkies.net is intended for general educational and informational purposes.

The website is not a substitute for professional archaeological, academic, scientific, legal, conservation, cultural heritage, or other specialist advice.

Readers conducting academic or professional research should consult primary sources, original scholarly publications, qualified specialists, and appropriate institutions rather than relying solely on summaries or calculations provided by this website.

Use of MayaSkies.net is also subject to the website’s Disclaimer, which is incorporated into these Terms by reference.

3. Permission to Use the Website

MayaSkies.net grants you a limited, non-exclusive, non-transferable, and revocable permission to access and use the website for lawful personal, educational, research, and informational purposes.

You may:

  • read and reference publicly available articles;
  • use available educational tools;
  • link to publicly accessible pages;
  • quote limited portions of content where permitted by applicable law and accompanied by appropriate attribution; and
  • use the website for legitimate personal study or research.

This permission does not transfer ownership of any content or intellectual property.

4. Prohibited Uses

You may not use MayaSkies.net in a way that violates applicable law or interferes with the website, its users, or its infrastructure.

Prohibited activities include, but are not limited to:

  • attempting to gain unauthorized access to the website, server, database, or administrative systems;
  • introducing malware, malicious scripts, viruses, or harmful code;
  • attempting to disable, overload, disrupt, or damage website services;
  • bypassing security, rate limits, access restrictions, or technical protections;
  • impersonating MayaSkies.net or falsely claiming affiliation with the website;
  • using website content to mislead others about historical or archaeological evidence;
  • reproducing substantial portions of the website without authorization;
  • republishing articles in full without permission;
  • systematically scraping or harvesting content in a manner that imposes an unreasonable technical burden;
  • using automated systems to exploit website tools at excessive volume;
  • removing copyright, attribution, source, or ownership notices; or
  • using the website for fraudulent, unlawful, abusive, or deceptive purposes.

Reasonable use by search engines, researchers, accessibility services, archival services, and similar legitimate systems may be permitted subject to technical controls and applicable policies.

5. Intellectual Property

Unless otherwise stated, original content created for MayaSkies.net—including original text, website design, graphics, diagrams, software, tool interfaces, and other original materials—is protected by applicable intellectual property laws.

Third-party materials remain the property of their respective owners.

The appearance of a photograph, name, quotation, archaeological drawing, trademark, logo, publication, dataset, map, 3D model, or other third-party material on MayaSkies.net does not transfer ownership of that material to the website.

Nothing in these Terms gives you permission to use third-party intellectual property beyond what is permitted by the applicable rights holder or by law.

6. Historical Materials and the Original Maya Skies Project

The name and domain MayaSkies.net have a historical association with resources connected with the earlier Tales of the Maya Skies project.

The current MayaSkies.net is an independent publication.

Unless explicitly stated otherwise, the present website is not operated by, affiliated with, sponsored by, endorsed by, or an official continuation of:

  • Chabot Space & Science Center;
  • the National Science Foundation;
  • the original Tales of the Maya Skies production;
  • its former production partners;
  • museums, universities, archaeological institutions, or government agencies referenced on the website; or
  • other organizations involved in historical projects discussed by MayaSkies.net.

The current website does not claim ownership of original films, production materials, databases, photographs, research documents, 3D models, logos, or other protected works created for the earlier project.

References to the historical project are provided for educational, historical, bibliographic, and contextual purposes.

7. Educational Tools and Calculators

MayaSkies.net may provide tools such as:

  • Maya calendar converters;
  • Long Count calculators;
  • Tzolk’in and Haab tools;
  • Calendar Round calculators;
  • Maya numeral converters;
  • astronomical visualizations; and
  • other educational calculators.

These tools are provided for informational and educational use only.

Results may vary according to the mathematical method, calendar correlation, assumptions, datasets, historical convention, software implementation, or input values used.

Tool outputs should therefore not be regarded as guaranteed historical facts, professional archaeological determinations, or independent verification of academic claims.

Users are responsible for checking calculations against appropriate primary or scholarly sources when accuracy is important.

8. Accuracy of Information

MayaSkies.net aims to provide accurate and useful information, but archaeology, archaeoastronomy, historical chronology, epigraphy, and related fields regularly involve uncertainty and scholarly disagreement.

Accordingly, the website does not guarantee that all content is:

  • completely accurate;
  • exhaustive;
  • current;
  • accepted by every scholar;
  • free from typographical or computational errors; or
  • suitable for a particular research purpose.

Content may be corrected or updated as new research becomes available.

The publication of an archaeological hypothesis or scholarly interpretation does not necessarily constitute endorsement of that interpretation.

9. Digital Reconstructions and Visualizations

MayaSkies.net may display illustrations, models, maps, diagrams, digitally reconstructed environments, or other visual representations of archaeological subjects.

Such materials may include varying degrees of interpretation.

Unless specifically identified as an exact record of surviving archaeological evidence, a visualization should not be assumed to represent with certainty how a structure, landscape, object, person, event, or astronomical phenomenon appeared in the past.

10. Third-Party Websites

MayaSkies.net may link to external websites operated by universities, museums, journals, government agencies, archaeological organizations, publishers, archives, or other third parties.

External links are provided for convenience, attribution, citation, or further research.

MayaSkies.net does not control third-party websites and is not responsible for their:

  • content;
  • accuracy;
  • availability;
  • security;
  • privacy practices;
  • policies; or
  • subsequent changes.

A link does not automatically constitute endorsement.

Your use of a third-party website is governed by that website’s own terms and policies.

11. User Communications and Feedback

If you send MayaSkies.net corrections, suggestions, feedback, questions, or other communications, you confirm that you have the right to provide that material.

You retain ownership of original material you submit unless otherwise agreed.

By voluntarily sending suggestions or feedback regarding the website or its tools, you permit MayaSkies.net to review, evaluate, and use those suggestions to improve the publication without an obligation to compensate you.

Do not send confidential, proprietary, or sensitive information unless specifically requested through an appropriate channel.

MayaSkies.net respects the intellectual property rights of authors, researchers, photographers, publishers, institutions, and other rights holders.

If you believe material appearing on the website infringes your copyright or has been used without appropriate authorization, please contact MayaSkies.net and provide enough information to identify:

  • the copyrighted work;
  • the material at issue;
  • the relevant page or URL;
  • your relationship to the rights holder; and
  • a means of contacting you.

Requests will be reviewed in good faith.

Submitting a copyright complaint does not guarantee any particular determination or outcome.

13. No Maya Community Representation

MayaSkies.net is an independent educational publication and does not claim to speak for Maya peoples, Maya communities, Indigenous organizations, archaeological institutions, or cultural authorities.

Historical cultures and contemporary Maya communities are diverse.

Information about one period, region, language, community, or tradition should not automatically be understood as applying to every Maya community.

14. No Warranties

To the fullest extent permitted by applicable law, MayaSkies.net and its content, tools, and services are provided on an as-is and as-available basis.

No warranty is made that:

  • the website will always be available;
  • information will always be complete or error-free;
  • calculations will produce results suitable for every purpose;
  • external links will remain accessible;
  • the website will be free from interruptions or technical problems; or
  • every error will be identified or corrected immediately.

Use of the website is at your own discretion.

15. Limitation of Liability

To the fullest extent permitted by applicable law, MayaSkies.net and its operators shall not be liable for indirect, incidental, consequential, special, or similar losses arising from your use of, inability to use, or reliance upon the website.

This includes losses arising from reliance on:

  • articles;
  • historical interpretations;
  • archaeological interpretations;
  • calculator results;
  • calendar conversions;
  • astronomical information;
  • digital reconstructions;
  • external links; or
  • other website resources.

Nothing in these Terms excludes liability that cannot legally be excluded under applicable law.

16. Availability and Modification of the Website

MayaSkies.net may modify, suspend, restrict, or discontinue any feature or portion of the website at any time.

This may include:

  • changing article content;
  • correcting errors;
  • replacing tools;
  • modifying calculation methods;
  • reorganizing URLs;
  • removing outdated material; or
  • limiting automated access.

There is no guarantee that any particular article, tool, URL, or feature will remain permanently available.

17. Privacy

Use of MayaSkies.net may involve the processing of limited technical or personal information, such as information submitted through contact forms or collected through ordinary website technologies.

The collection and handling of personal information is addressed separately in the website’s Privacy Policy.

Users should review that policy to understand applicable data practices.

18. Children

MayaSkies.net provides educational information that may be useful to students and families, but the website is not intended to solicit personal information from children.

Parents, guardians, and educators should supervise children’s use of online services when appropriate.

Any collection of personal information is subject to the website’s Privacy Policy and applicable legal requirements.

19. Enforcement

MayaSkies.net may restrict or block access where reasonably necessary to protect:

  • the security of the website;
  • its technical infrastructure;
  • intellectual property;
  • other users;
  • legal rights; or
  • the integrity of its educational resources.

This may include restricting abusive automated access or activity that violates these Terms.

20. Changes to These Terms

These Terms may be updated periodically to reflect changes in:

  • website functionality;
  • educational tools;
  • applicable requirements;
  • editorial practices;
  • technology; or
  • website operations.

Revised Terms become effective when posted unless otherwise stated.

The latest revision date will appear at the top of this page.

Continued use of MayaSkies.net after updated Terms are published constitutes acceptance of the revised Terms to the extent permitted by applicable law.

21. Severability

If any provision of these Terms is found to be invalid, unlawful, or unenforceable, the remaining provisions will continue to apply to the fullest extent permitted by law.

22. Entire Agreement

These Terms, together with the Privacy Policy, Disclaimer, and any other policies expressly incorporated by reference, constitute the terms governing use of MayaSkies.net.

23. Contact

Questions about these Terms of Service, intellectual property concerns, corrections, or use of MayaSkies.net may be submitted through the website’s Contact Us page.

Maya Skies — Reading the Sky, Time, and Architecture of the Maya.