Pertaining to a solstice. / Occurring on a solstice.

plural of winter solstice

plural of summer solstice

Alternative form of solstitial

In a solstitial manner; relating to solstices.

A pagan holiday and Wiccan Sabbat

(astronomy) The moment when the sun reaches the northernmost point of the sky, occurring on June 20–22. That would be summer solstice in the northern hemisphere and winter solstice in the southern hemisphere.

(astronomy) The moment when the sun reaches the southernmost point of the sky, occurring on December 21–22. That would be winter solstice in the northern hemisphere and summer solstice in the southern hemisphere.

December solstice, when the sun reaches the southernmost point of the sky

June solstice, when the sun reaches the northernmost point of the sky.