The Emperor's Birthday is a national holiday in Japan that celebrates the birthday of the reigning emperor. It is in honor of Emperor Naruhito, who ascended the throne in 2019. On this day, the Imperial Palace in Tokyo opens its gates to the public, allowing citizens to offer their congratulations. The Emperor, accompanied by Empress Masako and other family members, greets well-wishers from a palace balcony in a rare display of national unity and celebration.