What is the Maya Haabʼ?

The 365-day Haabʼ worked together with the Tzolkʼin to form the larger Calendar Round.

How the calendar is structured

18 periods of 20 days plus a 5-day Wayebʼ period.

Where and why it is used

Region: Mesoamerica. Primary context: Historical and cultural study.

History and development

The system belongs to the Ancient layer of the archive. Its origin is summarized as Pre-Columbian. CalculatorWiser separates historical reconstruction, religious observance, civil use, and modern technical standards so different systems are not treated as though they all work the same way.

Visual reference gallery

Conversion and accuracy notes

Some calendar systems can be converted deterministically with modern algorithms. Others depend on observation, local authority, historical reconstruction, or regional practice. CalculatorWiser marks those distinctions rather than presenting uncertain dates as exact.

Research trail

This entry is part of the research-backed World Calendar Archive. Primary research anchor for this entry: Mesoamerican calendar references.