| Big Bang | -15 000 000 000 |
| Formation of Earth (aka Terra) (Sol system) First humanoid race seeds the galaxy (ref- TNG) | -4 000 000 000 |
| First life begins on Earth | -3 500 000 000 |
| An ancient race builds a series of "Planet Killers" to combat the Borg.(ref novel Vendetta) | -3 000 000 000 |
| Slaver Empire (spanning the galaxy) is destroyed by a revolt, leading to a destruction of most intelligent life in the galaxy. The only things left of this empire are "stasis boxes", the contents of which are not affected by time.(ref- TAS Slaver Weapon) | -1 000 000 000 |
| The Preservers seed various planets with human/ humanoid life. (ref - TOS) | -2 000 000 |
| The city around the Guardian of Forever is built (ref - TOS "City on the edge..") | -997 800 |
| The Klingon Senate Hall is built | -11 800 |
| Vulcan is at war with itself | -10 000 |
| Spock and McCoy end up in Sarpeidon's past Zarabeth becomes pregnant with Spock's son (Zar) (ref - novel Yesterdays Son) | -2737 |
| Kahless the Unforgettable unites the Klingons The Bat'leth is invented | -869 |
| Surak Born. He will eventually stop the fighting on Vulcan. A group of 80000 Vulcans leave after losing the last war, | -67 |
| using sublight ships. Contact with this group is lost. their decendants will form the Romulan Empire. Kamen(aka Picard) lives a lifetime on Kataan. A probe | 150 |
| is launched before Kataan's sun goes Nova, and will eventually be found by the Enterprise-D (ref - Inner Light) Data comes to the past accidentaly, and loses his head. | 1368 |
| (ref - TNG Times Arrow) Transported to the past by the Guardian of Forever, Kirk | 1893 |
| stops McCoy from saving Edith Keeler.(ref - TOS City...) Humanity begins exploration of space with launch of Sputnik | 1930 |
| Khan Noonian Singh born (ref - Space Seed) | 1957 |
| Kirk and co. come back in time to get some whales to | 1962 |
| repopulate the species in the 23rd century. (ref - ST4) "There be WHALES here!" Beginning of the Eugenics Wars (sometimes called the third | 1986 |
| world war because it starts out mainly in third world countries, though NOT to be confused with World War III). The end of the Eugenics wars as Khan and the other supermen | 1992 |
| are sent into space on the Botany Bay in suspended animation. (ref - Space Seed) The Voyager makes it to Earth, only for a short time. | 1996 |