2494

January

 * January: The patrolling UNSC Callisto performs a routine inspection of a colonial vessel. It goes tragically awry, shots are fired, and colonists are killed.

March

 * March 2: Three UNSC Destroyers confront the insurgent-controlled UNSC Callisto in the 26 Draconis System at the culmination of the Callisto Incident. It is effectively the beginning of the Insurrection.

Unknown

 * The first Rebel insurrection in the Eridanus System begins.