50000

50,000 was a time period K-9 Mark I adopted after escaping from the Last Great Time War and finding the 21st century not to his liking.

Major events

 * The Jixen were driven to near-extinction, leaving behind only four. (K9TV: Hound of the Korven)
 * Zanthus Pia was assassinated by Ahab The Bounty Hunter under mysterious circumstances (K9TV: The Bounty Hunter)
 * Ahab was returned to the future only to be lost in space, last being seen suffering from asphyxiation before he was dragged into a supernova light years away, visible only as a bright flash in the distance. (K9TV: The Bounty Hunter)