Pohualli Calendar Converter

Enter parameters to view composite Mesoamerican calendar data.

{% if comp %}{% endif %}

Aztec mode subtracts 364 days before deriving the Year Bearer, shifting numbering vs Maya.

Corrections & Offsets

Derive Auto-Corrections

Provide any known calendar expressions (enter only what you know). Long Count must be full or 5-part (auto‑prepends baktun). Errors now show precise cause.

Range Search

Scan an inclusive JDN interval with optional filters. Returns first N matches (limit) in a lightweight table.

{% if range %}

Matches: {{ range.count }} (scanned {{ range.scanned }})

{% if range.rows %}
{% for f in range_fields %}{% endfor %} {% for row in range.rows %} {% for f in range_fields %} {% endfor %} {% endfor %}
{{ f }}
{% if f == 'jdn' and 'gregorian_date' in range_fields %} {{ row['jdn'] }} ({{ row['gregorian_date'] }}) {% else %} {{ row[f] }} {% endif %}
{% else %}

No matches.

{% endif %} {% endif %}

Wildcard '*' allowed in Long Count pattern segments. Step reduces computations (e.g. 5 scans every 5th day). Empty limit scans entire span.

Async Range Search (Cancelable)

Launch a background job for large spans. Progress updates live; you can cancel anytime.

No job yet.
{% if error %}
Error: {{ error }}
{% endif %} {% if comp %}

Results

JDN / Gregorian

{{ comp.jdn }} ({{ comp.gregorian_date }})

Tzolkin

{{ comp.tzolkin_value }} {{ comp.tzolkin_name }}

Haab

{{ comp.haab_day }} {{ comp.haab_month_name }}

Long Count

{{ comp.long_count }}

Year Bearer

{{ comp.year_bearer_value }} {{ comp.year_bearer_name }}

819 Cycle

Station {{ comp.cycle819_station }} / {{ comp.cycle819_value }}

Dir Color

{{ comp.dir_color_str }}

Mercury

{{ '%.2f' % comp.mercury_synodic }} ({{ comp.mercury_index }})

Venus

{{ '%.2f' % comp.venus_synodic }} ({{ comp.venus_index }})

Mars

{{ '%.2f' % comp.mars_synodic }} ({{ comp.mars_index }})

Jupiter

{{ '%.2f' % comp.jupiter_synodic }} ({{ comp.jupiter_index }})

Saturn

{{ '%.2f' % comp.saturn_synodic }} ({{ comp.saturn_index }})

Uranus

{{ '%.2f' % comp.uranus_synodic }} ({{ comp.uranus_index }})

Neptune

{{ '%.2f' % comp.neptune_synodic }} ({{ comp.neptune_index }})

Pluto

{{ '%.2f' % comp.pluto_synodic }} ({{ comp.pluto_index }})

Maya Moon

{{ '%.2f' % comp.maya_moon_age }}

Abn Dist

{{ '%.2f' % comp.abnormal_distance }}

Eclipse?

{{ 'Yes' if comp.eclipse_possible else 'No' }}

Star Zodiac

{{ comp.star_zodiac_deg }}° {{ comp.star_zodiac_name }}

Earth Zodiac

{{ comp.earth_zodiac_deg }}° {{ comp.earth_zodiac_name }}

Raw JSON

{{ comp | tojson(indent=2) }}
{% endif %}