The year 990 BBY saw the following significant occurrences.
- The Khommite people are under the impression that they've reached the apex of their civilization's development.
- Darth Bane journeys to Tython and discovers the holocron of Belia Darzu.
- On Tython, Darth Bane and his apprentice, Darth Zannah, engage in combat with Valenthyne Farfalla, Raskta Lsu, Worror Dowmat, Johun Othone, and Sarro Xaj.
- Zannah orchestrates a showdown that leads the Jedi Order to wrongly believe that the Sith have been eradicated from the galaxy.
- Bodo Baas's Master pens his prediction regarding the Skywalker twins and the Reborn Emperor. This prophecy is subsequently recorded within the Tedryn Holocron. Approximately a thousand years later, Leia Organa Solo will hear this prophecy retold. [6] (Approximate date)