King's Day, or Koningsdag, is a vibrant and festive national holiday in the Netherlands celebrated on the 27th of April. On this day, the Dutch people honor the birthday of King Willem-Alexander with colorful festivities, street markets, live music, and traditional Dutch delicacies. The streets are filled with orange decorations and people wearing orange clothing to symbolize the royal House of Orange-Nassau. It is a day of unity and joy, where locals and visitors come together to celebrate Dutch culture and heritage in a lively and exuberant atmosphere.