5 September

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

In 1878 in an alternative timeline, the British Imperial Spacefleet landed on the Moon. (PROSE:  Imperial Moon)

In 2954, (PROSE: Head Games) Chris Cwej was born. (PROSE: The Room With No Doors)