All of the Redskins' league titles were attained during two 10-year spans. From 1936 to 1945, the Redskins went to the NFL Championship six times, winning two of them. The second period lasted between 1982 and 1991 where the Redskins appeared in the postseason seven times, captured four Conference titles, and won three Super Bowls out of four appearances. The Redskins have also experienced failure in their history. The most notable period of general failure was from 1946 to 1970, during which the Redskins posted only four winning seasons and did not have a single postseason appearance. During this period, the Redskins went without a single winning season during the years 1956–1968. In 1961, the franchise posted their worst regular season record with a 1–12–1 showing. Since their last Super Bowl victory following the end of the 1991 season, the Redskins have only won the NFC East three times, made five postseason appearances, and had nine seasons with a winning record.