In 1928 – Radio station WGY of General Electric made the first simulcast in Schenectady, New York. A play called “The Queen’s Messenger” had audio broadcast over radio with the picture in sync over television at same time.
In 1985 – ISEE-3, renamed the International Cometary Explorer (ICE) flew through the gas tail of comet P/Giacobini-Zinner.
In 1998 – The US Congress released the contents of the Starr report on the internet. The report led to the impeachment but not the removal of President Clinton. The websites that hosted the report were slammed with traffic.