Adjective
Pertaining to, or discovered by, Meton, the Athenian.
Source: Webster's dictionaryA Metonic cycle equates to 235 lunar months in each 19-year cycle. Source: Internet
Given the Tishrei molad of a certain year, the length of the year is determined as follows: First, one must determine whether each year is an ordinary or leap year by its position in the 19-year Metonic cycle. Source: Internet
Leap years The Jewish calendar is based on the Metonic cycle of 19 years, of which 12 are common (non-leap) years of 12 months and 7 are leap years of 13 months. Source: Internet
However, a Metonic calendar will drift against the seasons by about 1 day every 200 years. Source: Internet
Julian Period from indiction, Metonic and solar cycles Let Y be the year BC or AD and i, m and s respectively its positions in the indiction, Metonic and solar cycles. Source: Internet
Meton 's cycle had an integer number of days, although Metonic cycle often means its use without an integer number of days. Source: Internet