 On October 2, 1957, Velikiye Luki Oblast was abolished, and Zharkovsky District was transferred to Kalinin Oblast.On January 12, 1960 the district was abolished and split between Belsky, Nelidovsky, and Oktyabrsky Districts; on December 27, 1973 it was re-established.In 1990, Kalinin Oblast was renamed Tver Oblast.