Discovery Day is a national public holiday in the Cayman Islands commemorating the sighting of the islands by Christopher Columbus on 10 May 1503 during his fourth voyage to the New World. The day recognises this historic moment as the first recorded encounter between the Cayman Islands and the wider world. It is observed as a time to reflect on Caymanian heritage and progress, often marked by community gatherings, cultural activities, and family-oriented events. Government offices, schools, and most businesses close in observance.