National HIV/AIDS and Aging Awareness Day (NHAAD), led by the AIDS Institute, is observed on September 18 each year. It highlights the growing number of people who are living longer with HIV due to advances in treatment. The day also raises awareness of the unique health, social needs, and challenges related to HIV prevention, testing, treatment, and care for older adults. Over half of people diagnosed with HIV in the U.S. are aged 50 and older, including those diagnosed later in life and those who have lived with HIV for many years.