| Year |
Event |
| 2340 |
| •1 | Worf is born on Qo'noS.1
 |
|
| 2346 |
| •2 | The Romulans attack the Khitomer outpost. An infant Worf is rescued from the aftermath by Sergei Rozhenko, a Starfleet officer who subsequently adopts him.2
|
|
| 2353 |
| •3 | Worf kills a Human child during a soccer match.3
|
|
| 2357 |
| •4 | Worf joins Starfleet Academy.4
|
|
| 2361 |
| •5 | Worf graduates from Starfleet Academy.5
|
|
| 2364 |
| •6 | Worf joins the USS Enterprise-D.6
|
| •7 | Worf is appointed as Chief Security Officer of the Enterprise-D.7
|
|  |
| 2366 |
| •8 | Worf becomes father of Alexander.9
|
|
| 2367 |
| •9 | K'Ehleyr returns to the Enterprise with her and Worf's son, Alexander. She is murdered by Duras soon afterwards; Worf kills Duras in retaliation. Alexander is sent to live with Worf's parents on Earth.9
|
| •10 | The Klingon civil war; Worf resigns Starfleet to fight in the conflict.10
|
|
| 2368 |
| •11 | Worf returns to Starfleet.11
|
| •12 | The Enterprise-D is badly damaged by a quantum filament, forcing Deanna to assume temporary command. Miles and Keiko O'Brien's daughter, Molly O'Brien, is delivered in the ten-forward lounge by Worf.12
|
| •13 | Worf's son Alexander returns to the Enterprise-D.13
|
|
| 2369 |
| •14 | Admiral Nechayev relieves Captain Picard of his command and assigns him, Lieutenant Worf and Dr. Crusher to a mission to infiltrate Celtris III. Picard is captured on the mission.14
|
| •15 | Captain Jellico, in temporary command of the Enterprise-D, mines the McAllister nebula to force a Cardassian fleet hiding there to surrender. He orders Captain Picard's release. Picard subsequently returns to the Enterprise-D.15
|
| •16 | The Cardassians retreat from the Bajoran system, abandoning the Terok Nor ore processing facility in orbit of the planet. The Bajoran Provisional Government asks Starfleet to take over the running of the station.16
|
|  |
| 2370 |
| •17 | A future version of Alexander returns to the present to try and convince his earlier self to appreciate Klingon culture and the warrior ethos.17
|
| •18 | The Dominion destroy the USS Odyssey.18
|
|  |
| 2371 |
| •19 | In the aftermath of the Enterprise-D's destruction, Worf goes on leave to the planet Boreth. He is eventually recalled and appointed as Strategic operations officer of Deep Space Nine.19
|
|
| 2373 |
| •20 | The second Borg invasion of the Federation. The cube is defeated by a Federation fleet including the USS Defiant and the USS Enterprise-E. The Enterprise-E subsequently travels back in time to 2063 in order to prevent the Borg from creating an alternate timeline in which the Federation is never created.20
|
| •21 | Worf becomes engaged to Lieutenant Commander Dax.21
|
| •21 | Dukat regains control of Deep Space Nine when the Dominion capture the station.21
|
|  |
| 2374 |
| •22 | Worf serves as First officer of the Rotarran under General Martok.22
|
| •22 | Alexander Rozhenko is assigned to the Klingon warship Rotarran.22
|
| •23 | Sisko becomes an adjutant on Starbase 375. Jadzia Dax becomes commander of the Defiant.23
|
| •24 | Starfleet launches an operation to recapture Deep Space Nine. Captain Sisko leads a large Federation force, but this is bogged down battling a Dominion fleet. The Defiant breaks through and reaches Deep Space Nine just as the minefield is destroyed; Sisko convinces the Prophets to prevent Dominion reinforcements from coming through the wormhole. A joint Federation/Klingon force recaptures the station.24
|
| •24 | As Dominion forces leave, Damar murders Ziyal. Distraught at losing both the station and his daughter, Dukat becomes mentally unbalanced and is captured by Federation forces.24
|
| •25 | Worf and Dax marry.25
|
| •26 | The Romulans join the war against the Dominion.26
|
| •27 | The first Allied offensive captures the Chin'Toka system from the Dominion.27
|
| •27 | Jadzia Dax is killed by Gul Dukat, who seals the entrance to the Wormhole. The Dax symbiont develops life-threatening complications whilst on its way home to Trill; to save its life it is transplanted into the only available host, Ezri Teegan.27
|
|  |
| 2375 |
| •28 | Worf visits the Enterprise-E. Whilst he is there, the ship travels to the Briar Patch where the crew expose the plot by Admiral Dougherty and the Son'a to forcibly relocate the Ba'ku.28
|
| •29 | Worf is reported Missing in Action during the Dominion war. Ezri steals a Runabout and manages to find his escape pod, but the two are captured by the Breen.29 They are subsequently freed by Legate Damar.30
|
| •31 | The seventh Weyoun clone is killed by Worf.31
|
| •32 | The Chin'toka system is retaken by Dominion and Breen forces. The USS Defiant is destroyed during the battle.32
|
| •33 | Worf kills Gowron in personal combat.33
|
| •34 | The Cardassian fleet switches sides, helping the Allies to inflict a major defeat on the Dominion and Breen forces. As allied forces approach Cardassia, Odo links with the female Founder and convinces her to end the Dominion war. Garak chooses to remain on the devastated Cardassia to assist in rebuilding efforts.35
|
| •34 | In the aftermath of the Dominion war, Kira is appointed commander of Deep Space Nine; Worf becomes Ambassador to the Klingon Empire; O'Brien accepts a teaching post at Starfleet Academy; Odo returns to the Great link, ending his relationship with Kira; Rom becomes the Ferengi Grand Nagus.34
|
|
| 2379 |
| •36 | The Enterprise-E travels to Romulus to meet Praetor Shinzon. Shinzon attempts to destroy the Enterprise-E as part of a plot to launch a war against the Federation. Data is killed36
|
|
