Trecena

The Trecena is a 13-day cycle within the Mayan Tzolkin calendar. Each Trecena is governed by the Day Sign that falls on its first day, and it establishes the overarching theme for the entire 13-day period. In Mayan numerology, the Trecena of birth provides context for the Birth Kin, describing the larger energetic environment into which the individual was born.