On May 17, 1990, the World Health Organization removed homosexuality from its list of mental disorders, a significant step towards LGBTQ+ rights and recognition.

On May 17, 1973, the Watergate hearings began, marking a pivotal moment in U.S. political history as it exposed widespread corruption at the highest levels of government.

On May 17, 1969, the first successful test of the Apollo 10 mission took place, which was a dress rehearsal for the first moon landing.