Bureau of the Royal Household Inviting people to join in signing to offer good wishes. His Royal Highness Prince Kanitthathirachao Her Royal Highness Princess Maha Chakri Sirindhorn Prince Maha Chakri Sirindhorn Maha Vajiralongkorn Worarajaphakdee Sirikakarini Peeriyapatana Ratthasima Kunakornpiyachat Princess Maha Chakri Sirindhorn On the occasion of His Majesty's birthday, April 2, 2024, through the online system. at the website of His Majesty's government agency www.royaloffice.th Between 1 - 3 April 2024 Source: Thai News Agency