Three astronauts, Richard J. Hieb, Thomas D. Akers, and Pierre J. Thuot, simultaneously walked in space for the first time.
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The first four-engine aircraft was built and flown by Igor Sikorsky.
Zakir Husain began an almost two-year term as President of India.
An assassination attempt was made on Pope John Paul II.
The first US airmail stamps were issued, costing 24 cents.
The Beatles movie, 'Let it Be,' premiered.