On 12 August 2020 at 15.00 hrs., H.E. Mrs. Chulamanee Chartsuwan, Ambassador of Thailand to Sri Lanka, together with officials of the Royal Thai Embassy in Colombo participated in a ceremony to celebrate the Birthday Anniversary of Her Majesty Queen Sirikit The Queen Mother at the chancery of the Embassy. All participants uttered congratulatory remarks and signed a congratulatory book for The Queen Mother.