Mirzo Ulugbek (formerly 50 let SSSR; âÂÂ50 years of the USSRâ until 1992) is a station of the Tashkent Metro on Chilonzor Line. The station was opened on 6 November 1977 as part of the inaugural section of Tashkent Metro, between October inkilobi and Sabir Rakhimov.