June 16
Updated June 2023: For tickets to the SF Opera’s Centennial Concert on June 16: “a once-in-a-century concert featuring the San Francisco Opera Orchestra and Chorus and opera stars of the past, present and future,” see their site here.
Original post: The San Francisco Opera is celebrating its 100th year, starting in September with Antony and Cleopatra, and following with Eugene Onegin and Dialogues of the Carmelites, and other beloved operas throughout the 2022-2023 season; punctuated with fun centennial events such as the annual Opera in the Park (September 11, 2022), Open Opera House (October 23, 2022) and 100th Anniversary Concert (June 16, 2023).
See their site for more information on their 100 years and 2022-2023 season.