Mesoamerica · in continuous use for over 2,000 years
Mayan Tzolk'in
Places your birth in the 260-day sacred count: one of twenty day signs, carried by one of thirteen tones.
Where it comes from
The Tzolk'in is the sacred calendar of the Maya world — 20 day signs interlocking with 13 numbers into a 260-day round. It is not a dead system: daykeepers in the Guatemalan highlands still keep the count today, naming children and ceremonies by it.
What we compute from your birth
We convert your birth date to the Long Count using the standard GMT correlation — the alignment accepted by Maya scholarship — and derive your day sign, its numbered tone, and the thirteen-day trecena your birth belongs to.
The positions and cycles are computed with real astronomy and calendar arithmetic — the interpretation never invents a number.
If it's new to you
The day sign works like a Sun sign — twenty archetypes instead of twelve — and the tone (1–13) is a volume knob the Western zodiac has no equivalent for: the same sign at tone 2 whispers what it shouts at tone 12.
Key terms
- Tzolk'in
- The 260-day sacred round — 20 day signs × 13 tones — running alongside the solar year.
- Day sign (nawal)
- One of twenty named energies (Crocodile, Jaguar, Reed…) — the archetype of your birth day.
- Tone
- The number 1–13 carried with your day sign — its intensity and role in the thirteen-day arc.
- Trecena
- The thirteen-day period your birth falls in, named for its first day — a background theme.
- Haab
- The 365-day solar year the Maya ran alongside the sacred count — your reading grounds the Tzolk'in against it.