Every year on the 1 August Warsaw commemorates the outbreak of the Warsaw Uprising. The fights against Nazi occupation in Warsaw, organised by the Home Army (Armia Krajowa) started at 5 pm, 1 August 1944 and lasted for 63 days.
Daria Czarneczka: The Warsaw Uprising - 1 August 1944
Paweł Ukielski: Warsaw Uprising in the Consciousness of Poles. Warsaw Rising Museum as a Place of Remembrance.