The first railway line in Pakistan opened, with trains running from Karachi to Kotri.
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Zakir Husain began an almost two-year term as President of India.
The first US airmail stamps were issued, costing 24 cents.
OpenAI's newest version of ChatGPT, GPT-4 Omni (GPT-4o), went live.
The first four-engine aircraft was built and flown by Igor Sikorsky.
A new study was published in the journal 'Nature Geoscience,' which showed that the moon is still shrinking with recent moonquakes as it cools.
