On 3 December 2025, the Royal Thai Embassy in Athens organised activities on the occasion of the Birthday Anniversary of His Majesty King Bhumibol Adulyadej The Great, the National Day of the Kingdom of Thailand, and Thailand’s Father’s Day of 5 December 2025. H.E. Mr. Sathana Kashemsanta Na Ayudhya, Ambassador of the Kingdom of Thailand to the Hellenic Republic, along with the Embassy’s officials and Thai nationals residing in the Hellenic Republic, who also participated on behalf of the Thai communities residing in the Hellenic Republic, the Republic of Malta, and the Republic of Serbia, paid homage to His Majesty King Bhumibol Adulyadej The Great and participated in the activities to celebrate the National Day and Father’s Day. On this occasion, the participants also observed a moment of silence for 93 seconds in remembrance of Her Majesty Queen Sirikit, The Queen Mother, and the Embassy presented videos celebrating Her Majesty’s Legacy and contributions to Thailand’s foreign relations.

On 1 December 2025, the Royal Thai Embassy in Athens organised a blood donation activity in remembrance of Her Majesty Queen Sirikit, the Queen Mother of Thailand. H.E. Mr. Sathana Kashemsanta Na Ayudhya, Ambassador of the Kingdom of Thailand to the Hellenic Republic, along with the Embassy’s staff donated blood at the General Hospital of Athens Korgialeneio - Benakeio (Hellenic Red Cross). On this occasion, Dr. Anastasios Karandreas, Director of the Hospital, expressed the hospital’s sincere appreciation for the Embassy’s voluntary blood donation and proposed cooperation between the Embassy and the Red Cross in Greece.

On 23 November 2025, H.E. Mr. Sathana Kashemsanta Na Ayudhya, Ambassador of the Kingdom of Thailand to the Hellenic Republic, attended the fifth day of the European Muaythai Championship 2025 of the International Federation of Muaythai Associations (IFMA) hosted by the Panhellenic Muaythai Federation (PMF) at Paiania Olympic Indoor Hall in Athens.

In remembrance of Her Majesty Queen Sirikit, the Queen Mother of Thailand, on 23 November 2025 the Royal Thai Embassy in Athens and the Thai Community in Greece joined the tree planting activity organized by All Together We Can organization in Kifissia, northern suburb of Athens, one of the areas affected by previous wild fires.

On 19 November 2025, H.E. Mr. Sathana Kashemsanta Na Ayudhya, Ambassador of the Kingdom of Thailand to the Hellenic Republic, attended the opening ceremony of the European Muaythai Championship 2025 of the International Federation of Muaythai Associations (IFMA) hosted by the Panhellenic Muaythai Federation (PMF) at Paiania Olympic Indoor Hall in Athens. There are more than 550 athletes participating in this European competition from a total of 39 countries.