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What happened today (May 17) in history? Key events to look back on

From civil rights breakthroughs to global communication and historic events, May 17 brings together moments that shaped equality and progress.

By Pritha Chakraborty

May 17, 2026 09:00 IST

Some dates highlight milestones that changed how societies communicate, govern and move toward equality. May 17 brings together events linked to global connectivity, social reform and technological advancement. Here is a look at five notable events tied to this day.

World Telecommunication and Information Society Day observed

World Telecommunication and Information Society Day is marked every year on May 17 to highlight the importance of communication technologies and their role in modern society. The date commemorates the founding of the International Telecommunication Union.

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International Day Against Homophobia, Transphobia and Biphobia observed

International Day Against Homophobia, Transphobia and Biphobia is observed on May 17 to promote equality and raise awareness about discrimination faced by LGBTQ+ communities worldwide.

Norway adopts constitution (1814)

On this day in 1814, Norway adopted its constitution, one of the oldest still in use today. The day is celebrated as Norway’s National Day.

First Kentucky Derby held (1875)

On May 17, 1875, the first Kentucky Derby was held in Louisville, Kentucky. The race later became one of the most famous horse racing events in the world.

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Brown v. Board of Education ruling delivered (1954)

On May 17, 1954, the US Supreme Court delivered its landmark decision in Brown v. Board of Education, declaring racial segregation in public schools unconstitutional. The ruling became a major milestone in the American civil rights movement.

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