Wiktionary
summer solstices
n. (summer solstice English)
Usage examples of "summer solstices".
Then it died away and wasn't heard again until six months had passed, at which time excited scholars announced that the sound seemed to be occurring at the precise moment of the winter and summer solstices.
They occur on May Eve, Hallowe'en, February first, and August first, plus the winter and summer solstices.
Most Nokolai came, when they could, to the gatherings held on the winter and summer solstices.