noun🔗ShareSonnenwendeOne of the two points in the ecliptic at which the sun is furthest from the celestial equator. This corresponds to one of two days in the year when the day is either longest or shortest.""We celebrate the summer solstice with a big family barbecue because it's the longest day of the year." "Wir feiern die Sommersonnenwende mit einem großen Familien-Barbecue, weil es der längste Tag des Jahres ist.astronomytimenaturespacegeographyscienceenvironmentChat with AIVocabulary GamePractice Reading