In some regions, the syzygy period has obvious means to predict the time of occurrence of earthquake.

在某些区域范围，朔望时段对于地震预报有明显的时间意义。

In the tidal difference daily variations, there is a period of half lunar month of syzygy spring tides related to the phase of the moon.

在潮差逐日变化的半个朔望月的周期里，有朔望大潮，它与月相有关。