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February

 * February 10: UNSC declares the Spirit of Fire and its crew killed in action, from its previous missing in action appointment. Reasons of this change are kept secret.

July

 * July 5: Gabriel Thorne is born on Earth.

Unknown

 * The Office of Naval Intelligence recommends for the UNSC to implement martial law on Charybdis IX's capital city, Scyllion, but the UNSC is unable to do so, due to the escalating Human-Covenant War.
 * Jersey Morelli is born.