Sony’s iconic Walkman first went on sale in Japan.
Source
The Cassini–Huygens spacecraft became the first to enter Saturn's orbit.
King Louis I of Holland abdicated in favor of his son Napoléon Louis.
The United States Postal Service introduced ZIP codes for US mail.
The Morse code distress signal 'SOS,' originating from Germany, became the world's official message for help.
The Communist Party of China was founded with Chen Duxiu as the leader.
