HM the Queen's Birthday and National Mother's Day in Thailand
HM the Queen's Birthday and National Mother's Day in Thailand is held on August 12. This event in the second decade of the month August is annual. 
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Mother's Day was first celebrated in Thailand on April 15, 1950. In 1976, the date was changed to August 12 to commemorate the birthday of Her Majesty Queen Sirikit. She is perceived as the Mother of all Thai people. Ever since then, the 12th August has been celebrated as Mother's Day. Thai people celebrate this day because of the queen's benevolence towards needy and poor in the nation. The Queen has captured the hearts of Thai people through her devotion toward welfare and well- being of her people.
Similar holidays and events, festivals and interesting facts
National Women's Day in South Africa on August 9
International Day of Solidarity with the Struggle of Women in South Africa and Namibia on August 9
Women's Day in Tunisia on August 13 (commemorates the enaction of Tunisian Code of Personal Status in 1956);
Mother's Day in Antwerp and Costa Rica on August 15
National Women Soccer Players Day in Argentina on August 21
Day for the Dignity of Older Adults in Bolivia on August 26
Grandparents Day in Columbia on August 27 (Last Sunday in August);
Grandparents Day in Taiwan on August 27 (祖父母節, Zǔfùmǔ Jié - celebrated since 2010 on the last Sunday of August);
Go Topless Day on August 27 (celebrated in the nearest to Sunday 26 August)