Day of Sobriety is an unofficial holiday observed in Russia every September 11. The holiday was first instituted by the Russian Orthodox Church, with the date chosen to coincide with the Beheading of St. John the Baptist, a day when the faithful are expected to observe a strict fast that includes abstinence from alcohol. Although it was first celebrated in the early 20th century, the holiday faded from public consciousness after the Russian Revolution of 1917, when the Church's influence diminished. In the 21st century, Russian temperance movement activists revived the Day of Sobriety, receiving support from the Russian Orthodox Church. Despite its revival, the holiday remains unofficial. Historically, the Soviet government also promoted sobriety through various anti-alcohol campaigns during its existence.