Here is a list of major festivals held at Yasukuni Shrine.
Shinnensai (New Year's Festival)
Kenkoku kinensai (National Foundation Day) Anniversary of the day on which Japan's first Emperor, Jinmu, is said to have founded our nation.
Kinensai (Spring Festival for Harvest)
Shunki Reitaisai (Annual Spring Festival)
Showasai (Showa Festival) Emperor Showa's birthday
Gosoritsu Kinenbisai (Founding Day) Commemoration of the founding of Yasukuni Jinja
Shuki Reitaisai (Annual Autumn Festival)
Meijisai (Emperor Meiji's Birthday)
Niinamesai (Festival of First Fruits)
Tenno gotanshin Hoshukusai (Birthday of the Current Emperor)
The first, 11th and 21st day of each month
Asa Mikesai, Yu Mikesai, Eitai Kagurasai (Perpetual Kagura Festivals)