The Wheel of the Year is an intermittent calendar that celebrates 8 periodic celebrations

https://wiki-aero.win/index.php/Accepting_the_Seasons:_A_Journey_By_Means_Of_the_Wheel_of_the_Year_in_Pagan_Traditions

The Wheel of the Year is actually a cyclical calendar that commemorates eight periodic festivals, noting the changing of the periods and also nature's rhythms