« On March 8, 1917, in Petrograd, February 23, 1917, on the Julian calendar, women textile workers began a demonstration that eventually engulfed the whole city, demanding "Bread and Peace"—an end to World War I, to food shortages, and to czarism. This marked the beginning of the February Revolution, which alongside the October Revolution, made up the second Russian Revolution. Revolutionary leader Leon Trotsky wrote, "23 February (8th March) was International Woman's Day and meetings and actions were foreseen. But we did not imagine that this 'Women's Day' would inaugurate the revolution. Revolutionary actions were foreseen but without a date. But in the morning, despite the orders to the contrary, textile workers left their work in several factories and sent delegates to ask for the support of the strike… which led to mass strike... all went out into the streets." Seven days later, Tsar Nicholas II abdicated, and the provisional Government granted women the right to vote.

In 1917, following the October Revolution, Bolsheviks Alexandra Kollontai and Vladimir Lenin made IWD an official holiday in the Soviet Union. On May 8, 1965, the USSR Presidium of the Supreme Soviet decreed International Women's Day a non-working day in the USSR, "in commemoration of the outstanding merits of Soviet women in communistic construction, in the defense of their Fatherland during the Great Patriotic War, in their heroism and selflessness at the front and in the rear, and also marking the great contribution of women to strengthening friendship between peoples, and the struggle for peace. But still, women's day must be celebrated as are other holidays." » [Wikipedia, on the settling of 8 March as IWD.]