Last Updated：2025/11/20
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The astronomer explained how the Metonic cycle, an approximate common multiple of the tropical year and the synodic month, helps align lunar months with the solar year in calendar design.
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The astronomer explained how the Metonic cycle, an approximate common multiple of the tropical year and the synodic month, helps align lunar months with the solar year in calendar design.
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Metonic cycle
Noun
Japanese Meaning
太陽年と朔望月の周期がほぼ一致する倍数としての周期、すなわち月の満ち欠けがほぼ同じ日に起こる19年周期の天文現象。
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