The story
- Middle English · borrowed fromyer tyme“yearly commemoration”
- English todayyeartime
From year + time, or revived from Middle English yer tyme (“yearly commemoration”) (which did not directly survive into Modern English). Compare Dutch jaartijd, jaargetijde (“season”), German Jahreszeit (“season, time of year”), Swedish årstid (“season”), English yeartide.
Etymology from Wiktionary, CC BY-SA 4.0.