Thai Heritage Conservation Day Date in the current year: April 2, 2024

Thai Heritage Conservation Day commemorates the birth anniversary of Princess Maha Chakri Sirindhorn, the second daughter of King Rama IX, who was born on April 2, 1955. Sirindhorn has earned a BA in History, MA in Oriental Epigraphy, and PhD in Educational Development. She has a keen interest in conservation, foreign cultures, history, languages, the arts, education, and technology.

To honor Princes Sirindhorn and celebrate the Royal Family's contribution to creation and conversation of national heritage for generations to come, the government of Thailand established Thai Heritage Conservation Day. It was first held on April 2, 1985, in honor of Sirindhorn's 30th birthday, and has been celebrated annually ever since.

On the occasion of the holiday, numerous cultural activities are held, including, but not limited to, academic seminars, exhibitions, lectures, concerts. They are aimed at providing the knowledge of Thai heritage and exhibiting the variety of Thai culture. On this day, citizens are encouraged to decorate buildings with the national flag.