Reggie Jackson became the first major leaguer to strike out 2,000 times.
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Zakir Husain began an almost two-year term as President of India.
Brazil introduced the Golden Law (Lei Áurea), signed by the Princess Imperial of Brazil, which abolished all forms of slavery.
The first railway line in Pakistan opened, with trains running from Karachi to Kotri.
The first four-engine aircraft was built and flown by Igor Sikorsky.
OpenAI's newest version of ChatGPT, GPT-4 Omni (GPT-4o), went live.
