The Mayan Calendar Systems: Comparative Hub for Tzolk'in, Haab' & Long Count
Understand how the three interlocking calendar systems of the ancient Maya — the 260-day Tzolk'in, the 365-day Haab', and the linear Long Count — work together across the 52-year Calendar Round.
The Maya Calendar at a Glance
The Maya didn't have one calendar — they had three interlocking systems that worked together like gears. Together, they tracked sacred time, solar time, and historical time with astonishing precision. While their civil Haab calendar maintained a constant 365 days without leap years, Maya astronomers tracked the solar year drift across centuries through empirical observation.
The Three Maya Calendar Systems
1. The Tzolk'in — Sacred Calendar (260 Days)
A carved limestone Tzolk'in calendar disc excavated from a Classic Period site, showing the 20 interlocking day sign glyphs arranged around a central deity face. Each glyph represents one of the sacred nawales — the spiritual energies that cycle through a 260-day count still used by Maya daykeepers today.
The Tzolk'in is the heartbeat of Maya spirituality. It combines 20 day signs (nawales) with 13 tone numbers to create 260 unique day-energies (20 × 13 = 260). This cycle governed ritual life, divination, and personal astrology.
Every Maya person was born on a specific Tzolk'in day, and this day-sign became a core part of their identity — similar to how we might know our zodiac sign today, but with far greater significance in daily life.
Why 260 days? The earliest securely dated Maya Tzolk'in glyph ("7 Deer") appears on a painted mural fragment from San Bartolo, Guatemala, dated to 300–200 BC (Stuart et al., Science Advances, 2022), while airborne LiDAR surveys of 415 Middle-to-Late Preclassic ceremonial complexes (1100–750 BC) show architectural orientations marking 260-day solar horizon intervals (Šprajc et al., Science Advances, 2023). Scholars link its origin to two complementary foundations: the human gestational cycle (~266 days from conception to birth, preserved in the oral teaching of Highland Maya ajq'ijab' daykeepers) and observational solar zenith/maize agricultural intervals paired with base-20 numerology (13 × 20).
2. The Haab' — Solar Calendar (365 Days)
A weathered limestone Haab' solar calendar carving showing agricultural season glyphs surrounding a central sun face. The Haab' organized Maya civic life — from planting and harvesting to festivals and royal ceremonies — across 18 named months plus the five "nameless days" of Wayeb'.
The Haab' is the Maya civil calendar, tracking the solar year with 18 months of 20 days each (360 days) plus a short month of 5 days called Wayeb' — considered an unlucky, liminal period between years.
Pop Mat 2 
Wo Black Conjunction 3 
Sip Red Conjunction 4 
Sotz Bat 5 
Sek Sky 6 
Xul Dog 7 
Yaxkin New Sun 8 
Mol Water 9 
Chen Black Storm 10 
Yax Green Storm 11 
Sak White Storm 12 
Keh Red Storm 13 
Mak Enclosed 14 
Kankin Yellow Sun 15 
Muwan Owl 16 
Pax Planting Time 17 
Kayab Turtle 18 
Kumku Granary 19 
Wayeb Nameless Days 3. The Long Count — Historical Calendar
A Long Count inscription on a Classic Period stela, showing the distinctive vertical columns of bar-and-dot numerals that record an exact date in Maya history. These monuments served as permanent historical records — ensuring that dynastic events were never lost to time.
The Long Count is a linear calendar counting individual days from the Maya creation date — August 11, 3114 BC (in the GMT correlation). It's expressed as a five-part number: Baktun.Katun.Tun.Uinal.Kin.
Long Count Units
- 1 Kin = 1 day
- 1 Uinal = 20 Kin = 20 days
- 1 Tun = 18 Uinal = 360 days (~1 year)
- 1 Katun = 20 Tun = 7,200 days (~20 years)
- 1 Baktun = 20 Katun = 144,000 days (~394 years)
The Calendar Round
Two interlocking carved stone calendar wheels representing the Calendar Round — the gear-like mechanism by which the 260-day Tzolk'in and 365-day Haab' meshed together to create a 52-year cycle of unique date combinations. Completing an entire Calendar Round was considered a profound generational achievement.
When the Tzolk'in and Haab' cycles are combined, they create the Calendar Round — a cycle of 18,980 days (approximately 52 years) before the same combination of Tzolk'in and Haab' dates repeats. This was the primary way the Maya dated events in their daily lives.
Convert Any Date
Use our Maya Calendar Converter to see any date — past, present, or future — in all three calendar systems simultaneously.
Explore More
The Haab (Solar Year)
The Haab was the ancient civil calendar tracking the 365-day solar year. It consisted of exactly 18 named "months" of 20 days each, ensuring farmers knew precisely when to plant and harvest their vital corn crops.
The Tzolk'in (Sacred Count)
The Tzolk'in is the 260-day sacred calendar used for divination and ritual timing. By meshing 20 day signs with 13 numbers, it creates unique cosmic destinies that are still consulted by traditional daykeepers today.
The Long Count
Used to permanently record dynastic history, the Long Count tracks the absolute number of days since a mythical creation event in 3114 BC. This base-20 mathematical system ensured monumental dates were never lost to time.
The Calendar Round
When the Tzolk'in and Haab run simultaneously, a specific date combination will only repeat once every 52 solar years. Surviving an entire Calendar Round was considered a profound generational milestone in Mesoamerica.
The Wayeb
At the very end of the 360-day Haab cycle sat five liminal days called the Wayeb. The Maya considered this period profoundly dangerous, practicing strict taboos and rituals to protect the world during its cosmic transition.
How It All Works
The genius of the Maya was that they did not use a single calendar. Explore how they stacked the Tzolk'in, Haab, Calendar Round, and Long Count together to solve complex civic, agricultural, and spiritual problems simultaneously.
Calendar Converter
Use our interactive tool to instantly translate any modern Gregorian date into its precise Maya equivalent. Calculate the exact Long Count, Tzolk'in sign, and Haab period for birthdays, anniversaries, or historical events.
Mayan Astrology
Explore how the ancient Maya 260-day Tzolk'in cycle combines 20 sacred Day Signs with 13 numbers to guide spiritual purpose, personal archetype, and daily divination.
Sign Calculator
Eager to find your own Maya day sign and tone? Our astrology calculator instantly computes your spiritual birthdate and reveals the ancient meanings attached to your personal cosmic patron deity.
Maya Mathematics
The incredible precision of the Maya calendars was only possible because they independently invented the mathematical concept of zero. Explore their elegant base-20 numbering system composed entirely of dots and bars.
Frequently Asked Questions
Did the Mayan calendar predict the end of the world in 2012?
No. December 21, 2012 marked the completion of the 13th Bak'tun (13.0.0.0.0) in the Long Count — a major cycle completion, comparable to an odometer rolling over. The Maya calendar continues indefinitely into higher orders (Pictun, Kalabtun), and Classic Maya inscriptions at Palenque and Coba explicitly reference dates thousands of years after 2012.
Is the Mayan calendar more accurate than the Gregorian calendar?
The civil Maya calendar (the Haab') was intentionally maintained as an unadjusted 365-day integer cycle (18 months of 20 days plus 5 Wayeb' days) with zero leap days, meaning it drifted against the tropical seasons by roughly one day every four years. However, Classic Maya astronomers at Copán and in the Dresden Codex tracked this cumulative drift empirically using Distance Numbers without altering the sacred 365-day liturgical count.
What is today's date in the Mayan calendar?
You can view today's exact date in all three Maya calendar systems on our homepage (updated daily), explore our Interactive Maya Research Tools Hub, or calculate any historical or future date in our Mayan Calendar Converter.