epa12917060 King Willem-Alexander of the Netherlands (L) and Jens van 't Wout skate on ice during the celebration of King's Day, in Dokkum, the Netherlands, 27 April 2026. The national holiday of 'Koningsdag' (King's Day) marks the birthday of the Dutch monarch. EPA/SEM VAN DER WAL / POOL

epa12917059 Princess Catharina-Amalia of the Netherlands (R) greets spectators during the celebration of King's Day, in Dokkum, the Netherlands, 27 April 2026. The national holiday of 'Koningsdag' (King's Day) marks the birthday of the Dutch monarch. EPA/SEM VAN DER WAL / POOL

epa12917058 People attend the Radio 538 King's Day celebration in Breda, the Netherlands, 27 April 2026. Every year, the festival draws nearly 40,000 visitors to the Chasseveld. The national holiday of 'Koningsdag' (King's Day) marks the birthday of the Dutch monarch. EPA/IRIS VAN DEN BROEK

epa12917057 Princess Catharina-Amalia of the Netherlands (L) greets spectators during the celebration of King's Day, in Dokkum, the Netherlands, 27 April 2026. The national holiday of 'Koningsdag' (King's Day) marks the birthday of the Dutch monarch. EPA/SEM VAN DER WAL / POOL

epa12917056 King Willem-Alexander and Queen Maxima of the Netherlands skate on ice during the celebration of King's Day, in Dokkum, the Netherlands, 27 April 2026. The national holiday of 'Koningsdag' (King's Day) marks the birthday of the Dutch monarch. EPA/SEM VAN DER WAL / POOL

epa12917055 Princess Laurentien of the Netherlands (C) attends the celebration of King's Day, in Dokkum, the Netherlands, 27 April 2026. The national holiday of 'Koningsdag' (King's Day) marks the birthday of the Dutch monarch. EPA/SEM VAN DER WAL / POOL

epa12917054 Princess Catharina-Amalia of the Netherlands (L) takes a photo of her father, King Willem-Alexander (2-R), with a Polaroid camera during the celebration of King's Day, in Dokkum, the Netherlands, 27 April 2026. The national holiday of 'Koningsdag' (King's Day) marks the birthday of the Dutch monarch. EPA/SEM VAN DER WAL / POOL

epa12917053 People wearing orange clothing attend the Radio 538 King's Day celebration in Breda, the Netherlands, 27 April 2026. Every year, the festival draws nearly 40,000 visitors to the Chasseveld. The national holiday of 'Koningsdag' (King's Day) marks the birthday of the Dutch monarch. EPA/IRIS VAN DEN BROEK