17.9.1939 - Soviet invasion of Poland

Western Ukrainian lands within Poland 1919–1939, Ukrainian insurgent movement 1930–1950, 23.8.1939 - Molotov–Ribbentrop Pact, 17.9.1939 - Soviet invasion of Poland , 1941-1944 - Nazi occupation of Ukraine and 8 more anniversaries

Western Ukrainian lands within Poland 1919–1939, 1932 - 1933 - Holodomor - Great famine in Ukraine, 1936 - 1938 - Velký teror v SSSR, 30.11.1939 - 13.3.1940 Winter War, 17.9.1939 - Soviet invasion of Poland and 4 more anniversaries

25. 2. 1948 - Communist coup d‘état in ČSR, 22. 6. 1941 – Operation Barbarossa - Nazi attack on the USSR, 17.9.1939 - Soviet invasion of Poland , 8. 5. 1945 - End of WWII, Western Ukrainian lands within Poland 1919–1939 and 2 more anniversaries

10. 7. 1946 – Agreement on Volhynian Czechs option with the USSR, 23. 2. 1949 – Beginning the forced agricultural collectivisation, 13. 7. 1943 - Destroying of Český Malín, 17.9.1939 - Soviet invasion of Poland , 1944 - 1947 - Population Transfers from the Ukrainian - Polish Borderlands and 2 more anniversaries

1. 9. 1939 - The outbreak of the WW2, 17.9.1939 - Soviet invasion of Poland , 13. 7. 1943 - Destroying of Český Malín, 1944 - 1945 - The liberation of Czechoslovakia, 8. 9. – 1. 11. 1944 - The battle of the Dukla Pass and 3 more anniversaries

1941 - 1945 - Transports to the concentration camps, 1945 - The liberation of the concentration camps, 22. 6. 1941 – Operation Barbarossa - Nazi attack on the USSR, 17.9.1939 - Soviet invasion of Poland , Western Ukrainian lands within Poland 1919–1939 and 3 more anniversaries

8. 9. – 1. 11. 1944 - The battle of the Dukla Pass, 1944 - 1945 - The liberation of Czechoslovakia, 22. 6. 1941 – Operation Barbarossa - Nazi attack on the USSR, 30. 5. 1945 – 29. 10. 1946 - Withdrawal of Germans from Czechoslovakia, 10. 7. 1946 – Agreement on Volhynian Czechs option with the USSR and 6 more anniversaries

1. 9. 1939 - The outbreak of the WW2, 17.9.1939 - Soviet invasion of Poland , 1945 - 1946 Resettlement of Poles in the "Regained lands"

1. 9. 1939 - The outbreak of the WW2, 5. 1. - 21. 8. 1968 - The Prague Spring, 21. 8. 1968 - Invasion of the Warsaw Pact troops, 17.9.1939 - Soviet invasion of Poland

1. 9. 1939 - The outbreak of the WW2, 17.9.1939 - Soviet invasion of Poland , 1941-1944 - Nazi occupation of Ukraine, 8. 9. – 1. 11. 1944 - The battle of the Dukla Pass, 10. 7. 1946 – Agreement on Volhynian Czechs option with the USSR