If you are not Thai then you will probably want to acknowledge your home country’s National Day in one way or another. Try to find a restaurant featuring the cuisine and traditional activities familiar to you. In September here are three r prominent National Days.
People’s Socialist Republic of Vietnam National Day
National Day (Vietnamese: Ngày Quốc Khánh) is a national holiday in Vietnam observed on September 2, commemorating the Vietnam Declaration of Independence from France on September 2, 1945. On this day at Ba Đình Square, Ho Chi Minh, leader of the communist Viet Minh organization, declared Vietnam’s independence under the new name of the Democratic Republic of Vietnam (DRVN) in a speech that invoked the United States Declaration of Independence and the French Revolution’s Declaration of the Rights of Man and of the Citizen.
Brazil Independence Day
The Independence Day of Brazil (Portuguese: Dia da Independência), commonly called Sete de Setembro (September 7), is a national holiday. The date celebrates Brazil’s Declaration of Independence from the United Kingdom of Portugal, Brazil and the Algarveson September 7, 1822. In Brasília, the celebration takes place at the Ministries Esplanade with a military parade in the presence of the President of Brazil. Around 30,000 people attend the event each year, which costs about one million reais.  Similar military parades are held in all the state capitals, and in many cities throughout the country.
Mexico Independence Day
The Grito de Dolores (“Cry of Dolores”) was uttered from the small town of Dolores, near Guanajuato in Mexico, on September 16, 1810. It is the event that marks the beginning of the Mexican War of Independence. The “grito” was the pronunciamiento of the Mexican War of Independence by Miguel Hidalgo y Costilla, a Roman Catholic priest.
Since October 1825, the anniversary of the event is celebrated as Mexican Independence Day. At around eleven in the evening, the President of Mexico rings the bell of the National Palace in Mexico City. After the ringing of the bell, he repeats a shout of patriotism (a Grito Mexicano) based upon the “Grito de Dolores”, with the names of the important heroes of the Mexican War of Independence, ending with the threefold shout of ¡Viva México!