Haab

The Haab, or vague year, is a 365 day period. It consists of 18 months of 20 days each, followed by one 5 day period (Wayeb). The Maya were aware that this was short of an actual year by approximately a quarter day, but this did not concern them.

The month names varied in the various Mayan dialects. The Yukatek Mayan months are shown below.

Pohp
Wo
Sip
Sotz'
Tzek
Xul
Yaxk'in
Mol
Ch'en
Yax
Sak
Keh
Mak
K'ank'in
Muwan
Pax
K'ayab
Kumk'u
Wayeb

The Haab combined with the Tzolk'in forms the Calendar Round.