noun
tenth month of the lunar calendar (Izumo)
Archaic term used in Izumo Province for the tenth lunar month, when the gods were believed to gather there. Contrasts with 神無月 (the same month elsewhere, when gods were absent).
See also: 神無月
出雲地方では旧暦十月を神在月と呼んだ。
In the Izumo region, the tenth month of the old lunar calendar was called Kamiarizuki.