National Science Day in Thailand
National Science Day in Thailand is held on August 18. This event in the second decade of the month August is annual. 
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Commemorates King Mongkut's prediction and observation of a total solar eclipse in 1868. Adopted 14 April 1982.
Similar holidays and events, festivals and interesting facts
World Day of Joy on August 1
International Booktuber's Day on August 22
International Internaut Day or Internet User Day on August 23
Building and Code Staff Appreciation Day on September 1
National Ichthyology Day in Argentina on September 10
Day of the Workers in the Oil, Gas, Power, and Geological Industry in Turkmenistan on September 12 (celebrated on the second Saturday in September);
Astronomy Day on September 19 (autumn)