Chulalongkorn Day, celebrated annually on 23 October and usually observed by all companies and organisations, commemorates the passing of King Chulalongkorn, who died on this day in 1910. King Chulalongkorn, or King Rama V, was the fifth monarch from the Chakri dynasty of which the current King Maha Vajiralongkorn is the 10th ruler.

At the age of 57 and having ruled what was then Siam for 42 years since ascending the throne at the age of 15, he was one of the Kingdom’s most revered heads of state.