noun
the thirty guardian deities
In Buddhism, a set of thirty deities each assigned to protect one day of the lunar month. A specialized religious term.
三十番神は、旧暦の毎日に一人ずつ守護神が割り当てられている。
The thirty guardian deities are assigned one per day of the lunar calendar.
From 三十 (thirty) + 番 (number, guard) + 神 (deity). The exact historical origin is uncertain, but the term is associated with Buddhist protective deities.