The day of 4 May marks the coronation anniversary of His Majesty King Maha Vajiralongkorn Phra Vajiraklaochaoyuhua, the tenth monarch of the Royal House of Chakri.

At 17.18 hr on 2 May 2026, His Majesty the King and Her Majesty Queen Suthida Bajrasudhabimalalakshana proceeded to perform a merit-making ceremony marking the royal coronation of His Majesty, at Amarin Winitchai Throne Hall in the Grand Palace.

Also attending the ceremony were Her Royal Highness Princess Maha Chakri Sirindhorn, Her Royal Highness Princess Chulabhorn Krom Phra Srisavangavadhana, Her Royal Highness Princess Aditayadornkitikhun, and Chaokhun Phra Sineenatha Bilasakalyani.

His Majesty the King ascended the throne as King Rama X, succeeding his Royal Father, King Bhumibol Adulyadej The Great, who passed away on 13 October 2016. The coronation of His Majesty King Rama X was performed on 4-6 May 2019, but the most important event of the three-day ceremony was held on 4 May. Therefore, 4 May was designated Coronation Day and a public holiday.

The Government is scheduled to host a grand reception in honor of His Majesty the King on the occasion of the coronation anniversary on 4 May 2026 at 19.00 hr at Santi Maitri Building, Government House. The event will be presided over by Prime Minister and Minister of Interior Anutin Charnvirakul, according to Government Spokesperson Rachada Dhnadirek.

On this occasion, the Government has invited many important figures and their spouses to attend the grand reception. They include, for instance, members of the Privy Council, former prime ministers, Cabinet members, members of the House of Representatives, senators, senior officials, foreign ambassadors and consuls, members of international organizations, and representatives from major private organizations and media agencies.

The grand reception will be televised by the Television Pool of Thailand and broadcast live on Radio Thailand under the Government Public Relations Department, from 18.50 hr onward. The Government invites all people to join together in paying tribute and offering felicitations to His Majesty the King on this special occasion.