The Haab' is part of the
Maya calendric system used by peoples of the
pre-Columbian Maya civilization. It was the Maya version of the
365-day calendar known to many of the pre-Columbian cultures of
Mesoamerica, which approximated the
solar year.The Haab' comprises eighteen "months" of twenty days each, plus an additional period of five days ("nameless days") at the end of the year known as Wayeb' (or Uayeb in 16th C. orthography). Bricker (1982) estimates that the Haab' was first used around 550 BCE with the starting point of the December
winter solstice. The Haab' was the foundation of the agrarian calendar and the month names are based on the seasons and agricultural events. For example the thirteenth month, Mak, may refer to the end of the rainy season and the fourteenth month, K'ank'in, may refer to ripe crops in the fall.
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