10 September

10 September was a date.

Events
In 2008, CERN first tested their Large Hadron Collider, (TV: Extremis, PROSE: Time Traveller's Diary) for just a few nanoseconds at first, accidentally opening a portal to another reality, and letting neutron eaters loose. When the collider started up properly, Professor Johnson and Jack Harkness had protons and antiprotons fired upon one another to cancel each other out. This closed the portal to the neutron eaters' dimension, and the Higgs particle, the fundamental particle of existence, was created as a side-effect. (AUDIO: Lost Souls)

Other
10 September 1752 was the eighth day purchased by Faction Paradox through the Gregorian Compact for their Eleven-Day Empire. (PROSE: Interference, The Book of the War)