USA HISTORY

Detailed explanation-1: -The calendar was based on a ritual cycle of 260 named days and a year of 365 days. Taken together, they form a longer cycle of 18, 980 days, or 52 years of 365 days, called a “Calendar Round.”

Detailed explanation-2: -Of all the ancient calendar systems, the Maya and other Mesoamerican systems are the most complex and intricate. They used 20-day months, and had two calendar years: the 260-day Sacred Round, or tzolkin, and the 365-day Vague Year, or haab. These two calendars coincided every 52 years.

Detailed explanation-3: -The Tzolkin (which translates to “count of days") is also known as the Divine Calendar. It represents the 260 days in the Maya Sacred Round, and is used to determine the dates of religious days, harvests, and ceremonial events, such as weddings. The 260 days are divided into 20 periods of 13 days each.

Detailed explanation-4: -A Maya month or uinal consists of 20 solar days or kins. The 260-day sacred year or tzolkin consists of 13 months of 20 days, while the 365-day vague year or haab, consists of 18 months of 20 days, called the tun, followed by an intercalary “month” of five days called the uayeb.

Detailed explanation-5: -The Haab is a 365-day solar calendar comprised of 18 months of 20 days each and one month of five days. These two together form the Calendar Round, which repeats in 52-year intervals. The Calendar Round is still used in some parts of Guatemala.