On 23 October 2015, H.E. Ambassador Sihasak Phuangketkeow led the representatives from Royal Thai Embassy in Tokyo, Royal Thai Consulate-General, Osaka, together with Heads of Thai public offices in Japan and the representative of Honorary Consulate-General in Nagoya,
On 22 October 2015, H.E. Ambassador Sihasak Phuangketkeow gave a lecture on society, culture, politic and economy of Thailand to the 1st-4th students of Thai language department of Tokyo University of Foreign Studies (TUFS).
On 20 October 2015, H.E. Ambassador Sihasak Phuangketkeow met with Dr. Takashi Shiraishi, President of the National Graduate Institute for Policy Studies, Tokyo.
On 19 October 2015, sixty students from the third year of Ito Elementary School, Shinagawa visited the Royal Thai Embassy.
On 16 October 2015, staff from Yokohama Reitou Co., Ltd paid a courtesy call on the Ambassador to have discussions about a channel to enhance investment and export agriculture products and processed foods.
On 16 October 2015, Mr. Nattapong Lathapipat, Minister Counsellor went to see the Wheelchair Basketball (Mitsubishi Electric 2015 IWBF Asia-Oceania Championship).
On 15 October 2015, H.E. Ambassador Sihasak Phuangketkeow hosted a lunch for Mr. Takayuki Ueda, Vice-Minister for International Affairs, Ministry of Economy Trade and Industry.
On 14 October 2015, H.E. Ambassador Sihasak Phuangketkeow participated in the ribbon cutting ceremony of the 12th International Flower Expo in Tokyo (IFEX),
On 13 October 2015, H.E. Ambassador Sihasak Phuangketkeow hosted a dinner for Mr. Kensaku Morita, Chiba Governor, and his spouse at the Royal Thai Residence. During dinner, both parties exchanged views and opinions about the bilateral cooperation between Thailand and Japan.
On 13 October 2015, Mr. Kazushi Sasabuchi, Managing Director of Hokuto Bank, paid a courtesy call on H.E. Ambassador Sihasak Phuangketkeow to discuss the outcome of the previous official visit of the Akita Governor, between 16-19 August.