Russia still used the Julian calendar, where the date was 25 October. Red Guards and soldiers took the bridges, the telegraph office and the train stations almost without a fight, and that night they entered the Winter Palace and arrested the ministers of the Provisional Government.
The next day the Congress of Soviets approved a new government led by Vladimir Lenin. Within months Russia left World War I and slid into a civil war that lasted until the early 1920s.
Source: Wikipedia