The Queen Mother's Birthday, which falls on the 12th of August, is a significant public holiday in Thailand. The date was chosen based on the birthday of Sirikit, the queen consort of King Bhumibol Adulyadej (Rama IX), who was born on this date in 1932. This holiday is a celebration for the entire nation as Thai people honor their beloved queen mother by organizing various commemorative events and activities.

This special day is also recognized as National Mother's Day in Thailand. Thai people use this day to express their respect and gratitude towards their own mothers, reflecting the profound love and high regard they have for their parents. Families gather together to celebrate, and it is a common custom for children to gift jasmine flowers, a symbol of maternal love and care, to their mothers.

In the spirit of the holiday, several ceremonies are held, and public places are adorned with lights and decorations. Thai individuals everywhere sing songs and engage in activities that show respect to the queen mother and mothers in general. Moreover, many charitable events take place on this day as a tribute to the philanthropic works of Queen Sirikit. The Queen Mother's Birthday therefore signifies not just a joyous celebration, but also a day of unity, respect, and kindness among the people of Thailand.