15 September

15 September was a date.

Events
In 1835, the HMS Beagle, with Charles Darwin aboard, reached the Galapagos Islands. The book this trip inspired, On the Origin of Species, changed the way humans thought about evolution. His other book, On the Origin of Alien Species, was never published. (PROSE: Time Traveller's Diary)

Births and deaths
In 1954, Pete Tyler, father of companion Rose Tyler, was born. (TV: Father's Day) A counterpart of Pete was also born in a parallel universe. (AUDIO: The Endless Night)