Sannō Matsuri (山王祭) or the Sannō Festival, is a major
Shintofestival in
Tokyo, along with the
Fukagawa Matsuri and
Kanda Matsuri. The Festival takes place annually in mid-June, but involves a procession called Shinkosai in even-numbered years only; annual celebrations encompass a number of activities and celebrations over a week, including the day-long Shinkosai (also called Jinkosai) parade through
Nagatachō,
Chiyoda, Tokyo.[1][2]