mayan_date: Mayan calendar dates

In calcal: Calendrical Calculations

Mayan calendar dates

Description

There are three Mayan calendars: the famous "long count" calendar, the "Haab" calendar, and the "Tzolkin" calendar. Of these, only the long count calendar can be converted to and from other calendars, so it is the only one that has been implemented here.

Usage

mayan_date(
  baktun = integer(),
  katun = integer(),
  tun = integer(),
  uinal = integer(),
  kin = integer()
)

as_mayan(date)

Arguments

baktun	Numeric vector
katun	Numeric vector
tun	Numeric vector
uinal	Numeric vector
kin	Numeric vector
date	Vector of dates on some calendar

Details

The Mayan long count calendar is a vigesimal (base-20) calendar with five components: kin (1 day), uinal (20 kin), tun (18 uinal), katun (20 tun), and baktun (20 katun). So the full cycle repeats every 20x18x20x20 = 144,000 days (approximately 394 years).

Value

A mayan vector object

See Also

cal_mayan

Examples

gregorian_date(2012, 12, 10:30) |>
  as_mayan()

calcal documentation built on Feb. 25, 2026, 9:07 a.m.