From Halopedia, the Halo wiki
- November 16: Then-First Lieutenant James Gregory Cutter is assigned to serve on the UNSC Brilliant Shores.
- Doctoral candidate Catherine Halsey meets Dr. Elias Carver at an academic social mixer. Halsey attempts to correct his formula for "the matrix mechanics of the socio-and politico-economic vectors of human expansion" for which he had used only 7 dimensional parameters in his calculations; Halsey claims he needed 16. Carver does not appreciate being challenged by a young upstart.
- Three weeks later the UNSC approves Halsey's grant proposal for Artificial Intelligence control for N-dimensional matrices, under the provision that she first successfully test a model of their choosing, which is Carver's. It is by testing this model, using both Carver's and her own dimensional parameters, that Halsey is convinced to join the UNSC and work to end the Insurrection.
- A river in Ütközet on planet Reach is dammed by settlers to run through a nearby hydroelectric power plant. Part of the river eventually dries, leaving only the bed, though a reservoir is created at the river's head.
- Roggan becomes the captain of the UNSC Spirit of Fire.
- Construction of the UNSC Pillar of Autumn begins.
- Hugo Barton is born.