The Flag of Nakhichevan is officially that of Azerbaijan, but there was one used in 1991 by seperatist groups in Nakhichevan during the breakup of the former Soviet Union. While similar to the flag of Azerbaijan, it uses yellow in one of its stripes and in the star and crescent. The status of this flag has been unofficial since 1992. (Unofficial) Nakchivean Flag. ... 1991 is a common year starting on Tuesday of the Gregorian calendar. ... Flag of Azerbaijan, currently the only official flag of the exclave Unofficial flag of Nakhichevan, used in the 1990s Map of Azerbaijan, showing Nakhichevan to the bottom-left Nakhichevan Autonomous Republic (Azerbaijani: Naxçıvan Muxtar Respublikası) is an exclave of Azerbaijan. ... 1992 is a leap year starting on Wednesday of the Gregorian calendar. ...