Convert dates between Gregorian and Mayan (Solar and Universal Calendar) calendars
The Mayan calendar (Solar and Universal Calendar) is cyclic. Each cycle consists of 13 Baktuns (approximately 5,125 years).
The Mayan Long (Solar and Universal Calendar) Count calendar consists of cycles: Baktun (144,000 days), Katun (7,200 days), Tun (360 days), Uinal (20 days), and Kin (1 day).