On 14 January 2064, the Ogrons invaded the planet Tivoli and freed it from the Hath. They were welcomed as heroes by the native Tivolians. The invasion marked the start of a period of Ogron rule on Tivoli which eventually ended when the planet was seized by the Uvodni, who were likewise welcomed as heroes, on 13 February 2174. Eventually, on 8 December 3001, the Hath reclaimed Tivoli in a siege in which they chased off the occupying Drahvins, after which they were welcomed as heroes. (PROSE: Time Traveller's Diary [+]Chris Farnell, BBC Children's Books (2020).)