Bodhidharma memorial ceremony
A Buddhist ceremony held on October 5th in honor of Bodhidharma, the founder of Zen Buddhism. Primarily observed in Zen temples.
At Zen temples, the Bodhidharma memorial ceremony is held every year on October 5th.
From 達磨 (Daruma, 'Bodhidharma') + 忌 (ki, 'memorial service'). The reading だるまき is a standard compound reading.