Metonic cycle

短语

默冬章

词形变化

Metonic cycles 复数 Metonic cycles

释义与例句

n.
  1. 1.

    A particular approximate common multiple of the tropical year and the synodic month; in other words, the 19-year period over which the lunar phases occur on the same dates.

    默冬章

    天文

    According to the Metonic cycle, a lunar calendar begins on the same solar date every 19 years.