15 July

15 July was a date.
In 1799, the Rosetta Stone was discovered, giving archaeologists the ability to translate Ancient Egyptian hieroglyphics for the first time. The Rosetta Stone II, carved 9000 years later, was updated to include translations for Neo-Martian, Krop Tor script and Emoji. (PROSE: Time Traveller's Diary)
In 1979, the Tenth Doctor thwarted an attempted Zalphon invasion of Earth by re-directing their mothership to Antarctica, where the gaseous-ectoplasmic species would freeze into ice crystals. (PROSE: Bennelong Point)
15 July was the date set for the broadcast of the music festival called The Pod in Pete's World. (PROSE: The Pod)