Yasukuni Jinja (靖国神社) is a one of the most notable Shinto Shrine around Tokyo. It was a shrine presided over by the Imperial Army and Navy until the end of WWII and still preserves a shrine complex which survived the war up until now. For details about this shrine, see the article on Yasukuni Shrine.
Yasukuni Jinja holds Reitaisai (Grand Festivals) twice a year -in spring and in fall. Shuuki Reitaisai, held on October 17-20, is the Autumn Grand Festival of the shrine.

Shuuki Reitaisai at Yasukuni Shrine

The Shuuki Reitaisai (秋季例大祭), or the Autumn Grand Festival, of Yasukuni Shrine is held annually from October 17 through 20. This shrine is one of the 16 Shinto shrines in the whole country which the Emperor sends an envoy to for the Reitaisai.
During this festival, many performances are performed at the Nogaukdo stage every day.

The envoy arrives at the shrine and participates in the rite held annally at 10:30am on October 18th.

Reiji Hoan-sai

This event takes place only in fall, and is not practiced in the spring grand festival. This ritual is (was) conduted to add new names of war deads to the book keeping the list of divinities held on the evening of October 17. In the evening, all lights go off, and in the darkness except for bonefires, priests enter the shrine building.

Performances at Nogakudo

Many performances are performed at the Nogaukdo stage during the daytime every day.