The opera "Antigona" by Tommaso Traetta received its premiere at the Imperial Theatre in Saint Petersburg, Russia, on November 11, 1772. This information is supported by multiple sources, including the website Opera-Arias.com and the Instagram post by Maestro Fabio Pirola, which both mention the specific date and location of the premiere. The image from the website Les Talens Lyriques provides a visual representation of the opera's setting, enhancing the understanding of the context in which "Antigona" was first performed. Image Source: Les Talens Lyriques