Chulalongkorn Day is observed in Thailand every October 23 to commemorate the death anniversary of King Rama V, who is celebrated for his significant contributions to the modernization of Siam. Born on September 20, 1853, he became king in 1868 and is known for implementing government and social reforms during a time when Siam faced threats from Western colonialism. His efforts to cede territory to avoid colonization earned him the title "the Great Beloved King." On this day, solemn ceremonies are held across the country, where flowers are laid at his statues and memorials, with the most notable being the equestrian statue located at the Royal Plaza in front of the Ananta Samakhon Throne Hall in Bangkok. Chulalongkorn Day serves as a public holiday, reflecting the respect and admiration the Thai people have for their former monarch.