The provided text details the historical background of October Revolution Day, tracing the events of Russia’s 1917 uprisings that ultimately led to the creation of the Soviet Union. It explains how the initial February Revolution ousted the Tsar and established a provisional government, which soon faced widespread worker dissatisfaction and the formation of influential Soviet councils. Capitalizing on this unrest, Bolshevik leaders like Leninorchestrated a successful armed takeover in Petrograd on November 7th. The article further clarifies that the holiday bears an October title because Russia was still relying on the Julian calendar at the time, which lagged behind the modern calendar. Finally, the source highlights that Belarus remains the sole former Soviet territory that continues to officially observe this historical milestone as a public holiday.