Coronation Day in Thailand was also known as Wan Chatramongkhon. It commemorates the formal coronation of the reigning monarch and highlights the sacred and historical traditions of the Thai monarchy.

When is Coronation Day?

Coronation Day is observed annually on May 4.

The following is the list of Coronation Day from 2020 to 2049.

The History of Coronation Day?

The tradition of royal coronation in Thailand traces back to the Ayutthaya Kingdom (1350–1767) and was refined during the Rattanakosin era, starting in 1782 with the founding of the Chakri Dynasty by King Rama I.

Thai coronations incorporate Hindu-Brahmin rituals, Theravāda Buddhist practices, and ancient Siamese royal customs, symbolizing the king's spiritual role as a Dhammaraja (righteous ruler) and protector of the kingdom.

King Rama IX (Bhumibol Adulyadej) was officially crowned on May 5, 1950, and reigned for 70 years, from 1946 until his passing in 2016. His coronation was conducted in a grand ceremony rich in Hindu-Buddhist rituals, symbolizing both spiritual and temporal authority. During his reign, May 5 was observed annually as Coronation Day in Thailand.

King Rama X (Maha Vajiralongkorn) ascended the throne on December 1, 2016, and was officially crowned on May 4, 2019. Beginning in 2020, the Thai government rescheduled Coronation Day to May 4 to commemorate the date of his formal anointment as king.