The Wheel of the Year is an intermittent calendar that commemorates eight periodic events

https://juliet-wiki.win/index.php/Welcoming_the_Seasons:_An_Adventure_Via_the_Wheel_of_the_Year_in_Pagan_Traditions

The Wheel of the Year is actually a cyclical calendar that celebrates eight periodic festivities, noting the transforming of the seasons as well as mother nature's rhythms