Batanes Day, observed in the Philippine province of Batanes, recurs every June 26 and commemorates the establishment of the mission in Batanes. This special non-working holiday celebrates the province's founding anniversary, which dates back to June 26, 1783, when Spain claimed the islands as part of the Philippines. The celebration includes formal ceremonies, cultural events, and festivities that honor the rich history and culture of Batanes and the contributions of the Ivatan people, the province's indigenous inhabitants. Batanes, known for its unique flora and fauna, is the smallest province in the Philippines, both in land area and population, and is primarily agricultural, with most residents engaged in farming and fishing. The day was officially designated as Batanes Day in 1993, and it reflects the province's historical significance and cultural heritage.