lunation train朔望輪系
SYNODIC LUNATION朔望月
semi lunation半太陰月
lunation number朔望月數
beginning of lunation合朔
the average lunation arithmetic平朔推步
1. Applying tropical year and lunation, the exchange formula of calendar and solar calendar could be derived.
漢以回歸年和朔望月為基礎, 推導出陰、陽歷日期換算公式.
來自互聯網
1. the period between successive new moons (29.531 days)