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Recent Posts

  • Why the Haab’ Had No Leap Year: Solar Drift and Maya Timekeeping
  • The Pleiades in Maya Culture: Agricultural Markers and Ritual Significance
  • What Is the GMT Correlation? Understanding Maya Calendar Date Conversion
  • Who Are the Lords of the Night? Maya Time Deities Explained
  • How Did the Venus Cycle Influence Maya Warfare and Ritual Timing?

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Calendar Systems

Explanations of the complex timekeeping cycles used for agriculture and rituals.

Why the Haab’ Had No Leap Year: Solar Drift and Maya Timekeeping

Why the Haab’ Had No Leap Year: Solar Drift and Maya Timekeeping

September 14, 2026 | Calendar Systems | Husai Anguiano Tamayo

The Haab’ calendar comprised 365 days without leap year correction, causing gradual solar drift. This design reflected Maya cosmological priorities over astronomical precision. Understanding this structure reveals how the Maya synchronized civil and sacred time through the Calendar Round.

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What Is the GMT Correlation? Understanding Maya Calendar Date Conversion

What Is the GMT Correlation? Understanding Maya Calendar Date Conversion

September 14, 2026 | Calendar Systems | Husai Anguiano Tamayo

The Goodman-Martínez-Thompson (GMT) correlation is the standard method used by scholars to convert Maya Long Count dates into the Gregorian calendar. This article explores the historical development, mathematical constants, and archaeological evidence supporting the GMT correlation, including the ongoing debate regarding the GMT+2 variant.

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Maya Astronomy: How the Maya Observed the Sun, Moon, Planets and Stars

September 5, 2026 | Archaeology, Calendar Systems, Maya Astronomy | Husai Anguiano Tamayo

An comprehensive examination of Maya astronomical practices, detailing their precise observations of celestial bodies, architectural alignments, and calendar systems used for agriculture and ritual.

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The Tzolk’in: The Sacred 260-Day Calendar of the Maya

The Tzolk’in: The Sacred 260-Day Calendar of the Maya

September 1, 2026 | Calendar Systems | Husai Anguiano Tamayo

The Tzolk’in is the foundational 260-day sacred calendar of the Maya civilization, combining 13 numbers and 20 day names to govern ritual life, divination, and personal identity. Still in use today, it represents a sophisticated interlocking timekeeping system distinct from the solar year.

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The 2012 Maya Calendar Phenomenon: Cycle Completion and Archaeological Reality

The 2012 Maya Calendar Phenomenon: Cycle Completion and Archaeological Reality

August 25, 2026 | Calendar Systems | Husai Anguiano Tamayo

December 21, 2012, marked the completion of a 5,125-year cycle in the Maya Long Count calendar, not the end of the world. Archaeological evidence from sites like Tortuguero and Quiriguá confirms the date signified a era reset rather than an apocalypse, debunking modern myths through rigorous epigraphic analysis.

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The Tzolk’in Calendar: Structure, History and Meaning

The Tzolk’in Calendar: Structure, History and Meaning

August 25, 2026 | Calendar Systems | Husai Anguiano Tamayo

The Tzolk’in is the 260-day sacred calendar of the Maya, governing ritual life and identity. This comprehensive guide explores its mathematical structure, archaeological origins, and enduring cultural significance in Mesoamerica.

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The Maya Calendar Round: Interlocking Cycles of Time and Ritual

The Maya Calendar Round: Interlocking Cycles of Time and Ritual

August 22, 2026 | Calendar Systems | Husai Anguiano Tamayo

The Maya Calendar Round is a 52-year cycle formed by the synchronization of the 260-day Tzolk’in and the 365-day Haab calendars. This system served as the primary method for dating events in much of Mesoamerica, marking a complete era before dates repeated.

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The Maya Calendar System: Tzolk’in, Haab, Calendar Round and Long Count

The Maya Calendar System: Tzolk’in, Haab, Calendar Round and Long Count

August 20, 2026 | Calendar Systems | Husai Anguiano Tamayo

An authoritative examination of the Maya calendar system, detailing the Tzolk’in, Haab, Calendar Round, and Long Count cycles based on archaeological evidence and astronomical data.

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The Maya Long Count Calendar: Chronology, Cosmology, and Calculation

The Maya Long Count Calendar: Chronology, Cosmology, and Calculation

August 19, 2026 | Calendar Systems | Husai Anguiano Tamayo

The Maya Long Count is a non-repeating calendar system used by pre-Columbian Mesoamerican cultures to track linear time from a mythical creation date. Unlike the cyclic Calendar Round, the Long Count identifies specific days over vast epochs using a modified vigesimal tally.

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The Haab Calendar: Months, Days and the Solar Year

The Haab Calendar: Months, Days and the Solar Year

August 16, 2026 | Calendar Systems | Husai Anguiano Tamayo

An authoritative archaeological guide to the Haab, the 365-day Maya solar calendar, detailing its eighteen months, Wayeb days, and civil functions.

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Recent Articles

  • Why the Haab’ Had No Leap Year: Solar Drift and Maya Timekeeping
  • The Pleiades in Maya Culture: Agricultural Markers and Ritual Significance
  • What Is the GMT Correlation? Understanding Maya Calendar Date Conversion
  • Who Are the Lords of the Night? Maya Time Deities Explained
  • How Did the Venus Cycle Influence Maya Warfare and Ritual Timing?
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