Straw Hat Day is observed on May 15 each year in the United States to celebrate the straw hat, a versatile fashion accessory worn by both men and women. This day marks the transition from winter headgear to spring and summer hats, encouraging people to don their straw hats in various styles, such as boaters, fedoras, and Panama hats. The origins of Straw Hat Day are unclear, but it is believed to have started in New Orleans in the late 1910s. Traditional customs include wearing a straw hat, taking photos to share on social media, and purchasing a new hat for those who do not own one. The straw hat not only serves as protection from the sun but also stands as a fashion statement and cultural symbol in various regions, such as the 'mokorotlo' in Lesotho.