1. 朔望月：而月定义为朔望月(synodic month),朔望月是月球绕地球一周回到原来的月相(moon phase)的时间,朔望月平均周期是29.5306日. 所有历法都围绕这两个周期去订定.
2.
2. 阴历月份：syn-hold 保持同步 | synodic month 阴历月份 | synodic periods 会合周期;朔望周期
3. 遡望月：supernova-超新星 | synodic month-遡望月 | syzgy-遡望
4. 朔望月[天]：synodic coordinate system 旋转坐标系[天] | synodic month 朔望月[天] | syphon 虹吸;虹吸管
synodic month的反义词
noun
1. the period between successive new moons (29.531 days)
Synonym: lunar monthmoonlunation