It appears there is a dupicate on the Dragon Bal Timeline page.
The events of Bipidi using Mahjin Buu to attack the Kaioshins appear twice, I think its just a typo. The first is the original, which happens 5 million years before age cited in the Dazenshuus. The second is tagged onto the info about the Multi-Uversal hide and seek game 239,856 before age.
5 Million years Before Age
- Bibidi successfully summons Majin Buu who destroys thousands of planets. Four of the five Supreme Kais are killed with Buu absorbing both the South Supreme Kai and Daikaioh, adding an aspect of good to him, as well as changing his appearance. Eventually, the East Supreme Kai kills Bibidi and leaves Buu's shell on Earth.
239,856 years Before Age
- Sometime around or after this point, the All Universe Hide and Seek Tournament had to be cancelled.
- Sometime after this point Bibidi unleashes Majin Buu, who kills the North Supreme Kai and West Supreme Kai and absorbs Daikaioh and the South Supreme Kai.