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阴月

阴月

...叫做“朔望月”（Synodic Month）或太阴月（Lunar Month），约为 29 日 12 小时 44 分 2.8 秒，简说为 29.53 日。

阴月 (in-getsu)。花残月 (hana-nokori-zuki)。

For this reason the first calendar was a lunar (moon) one and the year was made up of twelve "moons" .