On September 9th, Their Majesties accompanied by HRH Princess Maha Chakri Sirindhorn attended the cremation of Mom Rajawongse Kitiwatana Jayanta at the Royal Crematorium Wat Debsirindrawas Ratchaworawihan.

On September 11th, Their Majesties attended the Jewellery Fashion Show “Simply Exceptional 2019” where the precious and rare jewels from Lesotho was exhibited at Siam Kempinski Hotel in Bangkok. The jewels were created by Belgian and Thai artisans with the price around 7 billion baht marked the tri-relationship between the 3 countries: Thailand-Lesotho-Belgium.

The event was hosted by Count Gerald van der Straten Ponthoz, Chairman of the Chao Phya Abhai Raja Foundation. They attended the Dragon Dinner and Jewellery Show by Simply Exceptional 2019, where they revealed the Mouawad Dragon Suite which comprises of a necklace, bracelet, earrings, and ring showcasing five Fancy Vivid and Deep yellow diamonds with over 153 carats, and 432 colorless diamonds totaling over 272 carats at the Athenee Hotel in Bangkok

Members of  Royal Families from 6 countries were also in attendance together with Their Majesties:

Her Royal Highness Princess Soamsawali Krom Muen Suddhanarinatha, represented by M.L. Sarali Kitiyakara.

Her Royal Highness Princess Lea of Belgium.

His Royal Highness Tunku Naquiyudin and Her Royal Highness Tunku Nurul Hayati of Malaysia.

Her Royal Highness Princess Dechen Yangzom Wangchuck and Dasho Tandin Namgyel of Bhutan.

His Serene Highness Prince Chalermsuk Yugala.

His Serene Highness Prince Nawaphansa Yugala.

His Imperial and Royal Highness Grand Duke George Mikhailovich of Russia.

On September 12th, Their Majesties granted audience to Prince of Songkla University's Administrative Office where His Majesty was conferred an Honorary Degree of Science in Agriculture. His Majesty has taken a great interest in the late King Bhumibol Adulyadej’s Agricultural Project and has brought the Sufficiency Economy and New Theory Agriculture to develop in the country at Mandarin Oriental Hotel in Bangkok.