The vernal equinox, with its equal parts daylight and night, arrives on Monday, March 20 coinciding with the new moon and a spell of afternoon daylight low tides. The equinox is a significant moment in many communities, signifying the beginning of the planting season and the end of the deprivations of winter. The Celtic or Saxon tradition of Ostara, the coming of the light, is the origin of the Easter holiday.

Amidst waves of rain…