This study provides an in-depth analysis of the morphosyntax, semantics, and pragmatics of the major grammatical constructions involved in time reference in Yukatek Maya, a native Meso-american language spoken on the peninsula of Yucatán. The description traces temporal properties in clause structure, lexical predicate classes, verb inflection and derivation, adverbial modification, and clause and sentence combination, and thus covers a substantial part of the core grammar of the language.