H.M. King's Birthday is observed every July 28 in Thailand, commemorating the birth of King Maha Vajiralongkorn. This day is marked by national reverence, with public celebrations and expressions of loyalty from the Thai people. Government buildings and homes are adorned with decorations, and various civic events take place to honor the monarch. Participants often wear yellow, the King's color, and display portraits of the King. While the focus is on national pride and cultural traditions, some local businesses may offer special promotions or discounts tied to the holiday. The day serves as a significant reminder of the monarchy's importance to Thai identity and heritage.