National Senior Citizens Day is observed in the United States every August 21. Established by President Ronald Reagan in 1988, this day acknowledges the contributions of senior citizens and highlights the unique challenges they face, such as ageism, financial insecurity, and isolation. The term “senior citizens” typically refers to individuals over the age of 65, a demographic that has grown significantly, with older adults projected to outnumber children under 18 by 2035. Celebrations often involve reaching out to seniors, spending time with them, and performing acts of kindness, such as helping with groceries or attending medical appointments. Additionally, individuals may volunteer at retirement homes or share their support on social media using hashtags like #NationalSeniorCitizensDay. It is sometimes confused with World Senior Citizens Day, which is not specific to the U.S., and there is also an international observance called the International Day of Older Persons on October 1.