International Day of Action for Women's Health: An international observance celebrated on May 28 every year since 1987, focusing on women's health rights and advocacy. Wikipedia
Día Internacional de la Hamburguesa: A day celebrating the hamburger, observed on May 28, with a description referencing a professional wrestling event. Wikipedia
World Vegan Burger Day: A day promoting vegan burgers, observed on May 28, with a description that incorrectly references World Vegan Day on November 1. Wikipedia