20 before the Battle of Yavin (BBY) was a year in the era known as the Republic Classic era. During that period of time, the Clone Wars raged on between the Galactic Republic and Confederacy of Independent Systems. Around 20 BBY, the CIS began to construct their superweapon over the planet Geonosis. This year was known as Year 980 after the Ruusan Reformation and Year 3,633 after the signing of the Treaty of Coruscant.
- Mammon Hoole became a Galactic Republic scientist. (Approximate date)
- Orman Tagge became Baron of the House of Tagge.
- Reflex Amendment was passed by the Galactic Senate.
- Seti Ashgad was exiled to Nam Chorios.
- After being abandoned millennia before, Betha II was resettled by smugglers.
- Supreme Chancellor Palpatine's Centax-2 clone army's first batch of clones were born.
- Dewlannamapia and Isshaddik left Kashyyyk and joined the crew of Garris Shrike's Trader's Luck.
- Mitth'raw'nuruodo was exiled on an uninhabited world far in the outer fringes of Chiss space.
- Darth Maul returns to the galaxy after twelve years and formed the Shadow Collective alongside his brother, Savage Opress.
- The Death Watch take control of Sundari, capital city of the New Mandalorians.
- The Jedi Temple is attacked.
- A planet-wide jailbreak results in government breakdown on Ord Vaxal.
- 15:6–On approach to Westport on Coruscant, the stone mite-infested freighter Spinner crashes into Kishi, which is quickly overrun by the mites in an outbreak that results in the total collapse of the area's Pillar Zone. Jedi healers eventually destroy the mites, and Senate Bureau of Intelligence head Armand Isard labels the incident as an act of terrorism.
- 15:6–Agents of Armand Isard trace the Spinner to a previous stop on Orleon, and Isard, wrongly suspecting the planet of hosting Separatist bioweapon facilities, authorizes the release of mutant stone mites there. Carbonite canisters are launched onto Orleon from high orbit and thaw upon impact, releasing thousands of mites which proceed to begin consuming the planet's crust, and Orleon's entire population of 800 million evacuates offworld.
- Battle of Mygeeto (ongoing)
- 15:3:02—Battle of Duro (end)
- 15:3—Battle of Dreighton
- 15:3—Battle of Togoria
- 15:4—Battle of Foerost
- 15:4—Battle of Ixtlar
- 15:4—Battle of Alsakan
- 15:4—Battle of Basilisk
- 15:4—Battle of Anaxes
- 15:5—Battle of Honoghr
- 15:5—Rescue mission to Vandos
- 15:5—Battle of Alderaan
- 15:5—Battle of Gentes
- 15:5—Battle of Drongar (end)
- 15:5—Mission to Dagro
- 15:10—Battle of Azure Spaceport
- 15:11—Duel on Susevfi
- 15:11—Mission to Vjun
- 15:11—Battle of Bomis Koori IV
- 15:11—Duel on the Titavian IV
- 15:11—Battle of Rendili
- 15:11—Duel in the Coruscant Underlevels
- 15:11—Mission to Anzat
- 15:11—Mission to Saleucami
- 15:11—Battle of Ord Radama
- 15:11—Second Battle of Ossus
- 15:11—Battle of Ryloth
- 15:11—Battle of Clak'dor VII
- 15:11—Mission to Yorn Skot
- 15:11—Battle of Viidaav
- 15:12—Mission to Maramere
- 15:12—Battle of Boz Pity
- Battle of Sarrish
- Battle of Onderon
- Funeral of Steela Gerrera
- The Gathering
- Raid on the Crucible
- Attack on Obi-Wan Kenobi's fleet
- Rescue on Florrum
- Second Battle of Florrum
- Mission to Aut-O's flagship
- Escape from Abafar
- Carida Incident
- Duel at unidentified Outer Rim spaceport
- Raid on the Cybloc Transfer Station
- Skirmish on Florrum
- Mission to Mustafar
- Mission to Nal Hutta
- Attack on Jabba's Palace
- Takeover of Mandalore
- Battle of Sundari
- Defense of Cato Neimoidia
- Bombing of the Jedi Temple Hangar
- Funeral of the Jedi Temple bombing victims
- Escape from the Republic military base
- Capture of Ahsoka Tano
- Trial of Ahsoka Tano
- Duel at the Jedi Temple
- Battle of Ringo Vinda
- Battle of Scipio
- Creb on Bettok
- Thurlow Harris
- Shenir Rix
- Rianna Saren (Latest possible date)
- Venku Skirata on Mandalore
- Tyrn Jiton on Fenves
15:3 (22 months ABG)Edit
15:4 (23 months ABG)Edit
15:5 (24 months ABG)Edit
15:10 (29 months ABG)Edit
15:11 (30 months ABG)Edit
15:12 (31 months ABG)Edit
- Ruati on Nauton IV
- "Stang" on Trigalis
- Drama Korr aboard her yacht on the Karthakk system
- Durge on Karthakk
- In the Takeover on Mandalore
- In the Battle of Sundari
- MedStar I: Battle Surgeons
- "MedStar: Intermezzo"—Star Wars Insider 83
- MedStar II: Jedi Healer
- Star Wars: Clone Wars – "Chapter 21"
- The Clone Wars: The Sith Hunters
- Darth Maul—Death Sentence 1
- Darth Maul—Death Sentence 2
- Darth Maul—Death Sentence 3
- Darth Maul—Death Sentence 4
- The Clone Wars: Darth Maul: Shadow Conspiracy
- Star Wars: The Clone Wars – "A War on Two Fronts"
- Star Wars: The Clone Wars – "Front Runners"
- Star Wars: The Clone Wars – "The Soft War"
- Star Wars: The Clone Wars – "Tipping Points"
- Star Wars: The Clone Wars – "The Gathering"
- Star Wars: The Clone Wars – "A Test of Strength"
- Star Wars: The Clone Wars – "Bound for Rescue"
- Star Wars: The Clone Wars – "A Necessary Bond"
- Star Wars: The Clone Wars – "Secret Weapons"
- Star Wars: The Clone Wars – "A Sunny Day in the Void"
- Star Wars: The Clone Wars – "Missing in Action"
- Star Wars: The Clone Wars – "Point of No Return"
- Star Wars: The Clone Wars – "Revival"
- Star Wars: The Clone Wars – "Eminence"
- Star Wars: The Clone Wars – "Shades of Reason"
- Star Wars: The Clone Wars – "The Lawless"
- Star Wars: The Clone Wars – "Sabotage"
- Star Wars: The Clone Wars – "The Jedi Who Knew Too Much"
- Star Wars: The Clone Wars – "To Catch a Jedi"
- Star Wars: The Clone Wars – "The Wrong Jedi"
- "Republic HoloNet News Core Edition 15:3:02"—Star Wars Insider 75
- "CIS Shadowfeed Dispatch 15:3:21 Edition"—Star Wars Insider 75
- "Republic HoloNet News Core Edition 15:3:29"—Star Wars Insider 76
- Changing Seasons
- Empire 32: In the Shadows of Their Fathers, Part 3 (Appears in flashback(s))
- Empire 33: In the Shadows of Their Fathers, Part 4 (Appears in flashback(s))
- Star Wars: Clone Wars – "Chapter 22"
- The Paradise Snare (Mentioned only)
- Dark Force Rising Sourcebook (Indirect mention only)
- Star Wars: The Ultimate Visual Guide
- The New Essential Chronology
- The New Essential Guide to Alien Species
- The Complete Star Wars Encyclopedia
- The Essential Atlas
- Star Wars: Beware the Sith
- Star Wars: The Ultimate Visual Guide: Updated and Expanded
- The Essential Reader's Companion
- Star Wars: Sith Wars
Notes and referencesEdit