Eisaku SATO attended the Spring Korei-sai Festival (an Imperial ceremony to worship the Imperial ancestors held on Vernal Equinox Day), the Spring Shinden-sai Festival (an Imperial ceremony to worship the Eight Gods and the gods called Amatsukami and Kunitsukami held on Vernal Equinox Day), the Autumn Korei-sai Festival (an Imperial ceremony to worship the Imperial ancestors held on Autumnal Equinox Day), the Autumn Shinden-sai Festival (an Imperial ceremony to worship the Eight Gods and the gods called Amatsukami and Kunitsukami held on Autumnal Equinox Day), and Niiname-sai Festival (the Harvest Festival) almost every year while he was at the post of the prime minister.
佐藤栄作は首相在任期間中、春季皇霊祭・春季神殿祭、秋季皇霊祭・秋季神殿祭、新嘗祭にほとんど出席した。