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

https://mega-wiki.win/index.php/Welcoming_the_Seasons:_An_Experience_With_the_Wheel_of_the_Year_in_Pagan_Traditions

The Wheel of the Year is actually a cyclical calendar that celebrates 8 periodic events, marking the altering of the times and mother nature's rhythms