0 BBY

• The Princess Leia Organa comes into possession of the Death Star plans and entrusts them to R2-D2. Subsequently, she is captured by Imperial forces and imprisoned aboard the Death Star. [1]
• The Emperor Sheev Palpatine proceeds to dissolves the Imperial Senate, thereby establishing a royal dictatorship in its place. [1]
• Following this, the Trade Federation is dismantled. [9]
• Obi-Wan Kenobi and Luke Skywalker decide to become members of the Rebel Alliance. [1]
• The Galactic Empire conducts a successful test of the Death Star's fully operational superlaser, resulting in the destruction of the planet Alderaan. [1]
• Luke Skywalker, Obi-Wan Kenobi, Han Solo, and Chewbacca undertake a mission to rescue Princess Leia from imprisonment on the Death Star. [1]
• Obi-Wan Kenobi meets his demise at the hands of Darth Vader while aboard the Death Star. [1]
• The Battle of Yavin occurs during this year, initiated by the Death Star's arrival in the Yavin system with the intention of locating and annihilating the Rebel Alliance's base situated on Yavin 4. The consequences of this battle would eventually form the basis of the Galactic Standard Calendar currently in use, which was initially proposed by the New Republic to record significant events both before and after the battle. [1]
• During the Battle of Yavin, Luke Skywalker successfully obliterates the Death Star. [1]

• Secret mission to Tatooine [1]
• Destruction of Alderaan [1]
• Rescue of Princess Leia [1]
• Battle of Yavin [1]

• Qarwell Krass was born on the Hyborean Moon. [2]

• Aboard the Tantive IV [1] Raymus Antilles[1] TK-9091[1]
• On Tatooine [1] Owen Lars[1] Beru Whitesun Lars[1] Greedo[1] Unidentified Wookiee bounty hunter[10]
• During the Disaster [1] CZ-7OB[11] Tanivos Exantor Divo[3] Bail Organa[1] Breha Organa[1] Chrigeld Tinnine[12] WA-2V[11] L0-LA59[13] Anderam[1] Visaiya[1] Lintreyst[1]
• Endo Frant in the Alderaan system [14]
• During the Rescue of Princess Leia [1] TK-421[15] Shann Childsen[1] Obi-Wan Kenobi[1] Oxixo[1]
• During the Battle of Yavin [1] Jek Tono Porkins[1] R5-D8[1] John D. Branon[1] Dex Tiree[1] Jon Vander[1] Davish Krail[1] Puck Naeco[1] Theron Nett[1] R2-X2[1] Garven Dreis[1] R5-K6[1] Biggs Darklighter[1] R2-F2[1] Moradmin Bast[16] Harb Binli[17] Zal Dinnes[17] Jude Edivon[18] Conan Antonio Motti[19] Nozzo Naytaan[1] Ralo Surrel[17] Wilhuff Tarkin[1] Gazdo Woolcob[20] Wullf Yularen[2] Omi[21] MSE-6-G735Y[22]

Following the debut of Rogue One: A Star Wars Story, sources like Star Wars: Galactic Atlas indicated that the events within it unfolded during 0 BBY. However, with the unveiling of Star Wars: Timelines, Lucasfilm Ltd. has adjusted the timeline, placing those events in 1 BBY instead. Consequently, only the occurrences of Star Wars: Episode IV A New Hope are now situated within 0 BBY. In Timelines, the year is simply denoted as "0" without any BBY clarification.