Chakri Memorial Day is a significant public holiday in Thailand, celebrated every year on the 6th of April. This national holiday commemorates the establishment of the Chakri Dynasty by King Phutthayotfa Chulalok (Rama I) in 1782, who is revered to have laid the foundations of modern Thailand. Thai citizens utilize this day to honor the contributions made by the monarchy towards the development and progress of the nation, which includes all 10 kings from Rama I to Rama X.

The celebrations of Chakri Memorial Day involve a lot of traditional and official ceremonies. The reigning King, along with other members of the royal family, usually commence the ceremonies by offering wreaths at the statue of Rama I, located at the Memorial Bridge in Bangkok. This is followed by the King laying foundation stones for charity, paying homage to his ancestors and performing religious rites in temples, reminding the people about the glorified history of the Chakri Dynasty.

Chakri Memorial Day not only symbolizes respect towards the monarchy but is also considered a day of national unity in Thailand. It's a day off for the general population, with schools, businesses, and government offices closed. The historical significance of this day is taught in schools and, in many places, fairs and exhibitions illustrating the achievements of the Chakri Dynasty are organized. Although it's a solemn holiday, it serves to remind Thai people about the strength, wisdom, and benevolence of the Chakri Dynasty.