All times in UTC ·
Dashed edge = started before, or continues beyond, this day
Events on Tuesday 27 April 1920 1
1920Sovietization of AzerbaijanRed Army invasion ends Azerbaijani independenceThe Soviet 11th Army invaded the Azerbaijan Democratic Republic and installed a Bolshevik government in Baku, ending the country's brief period of independence. Azerbaijan became a Soviet republic and was later incorporated into the Transcaucasian SFSR. It did not regain independence until 1991.