Doubly Forgotten: Jewish Officers of the Polish Army Among the Victims of the Katyn Massacre13 October 2026 ‘Doubly Forgotten’ Exhibition at School Complex No. 1 in Kutno13 October 2026 ‘Doubly Forgotten’ Exhibition Presented at a Primary School in Kutno13 October 2026 ‘Doubly Forgotten’ Exhibition at School Complex No. 4 in Kutno-Azory13 October 2026 ‘Doubly Forgotten’ is presented in Kutno28 July 2026 First Exhibition Dedicated to the Polish-Jewish Victims of the Katyn Massacre Is Unveiled in Kutno21 May 2026 Day of Remembrance for the Victims of the Katyn Massacre in Johannesburg12 April 2026 Katyn Memorial Commemoration on 28 April 202528 April 2025 Ceremony at the Katyn Monument in Johannesburg on May 20, 202420 May 2024 Ceremony at the Katyn Memorial in the Judean Hills outside Jerusalem on April 13, 202313 April 2024