Cinco de Mayo is a yearly celebration held on May 5, which commemorates the anniversary of Mexico's victory over the Second French Empire at the Battle of Puebla in 1862, led by General Ignacio Zaragoza.
World Population Day is an annual global observance held on July 11th, established by the United Nations to raise awareness about issues related to population and promote reproductive health and rights.
Oktoberfest, annual festival in Munich, Germany, held over a two-week period and ending on the first Sunday in October.
National Cancer Survivors Day is a secular holiday celebrated primarily on the first Sunday in June in the United States.