These shrines are believed to have held their annual festivals, called "Sonokarakami no Matsuri," on the day of the Ox following the February Kasuga-sai Festival and on the day before the November Niiname-sai (Harvest Festival).
2月の春日祭の後の丑の日と11月の新嘗祭の前の丑の日が当社の例祭日とされ、園韓神祭（そのからかみのまつり）と呼ばれた。