Western Ukrainian lands within Poland 1919–1939, 17.9.1939 - Soviet invasion of Poland , 1941-1944 - Nazi occupation of Ukraine, 1943 - Conflict between Poles and Ukrainians in Eastern Galicia and Volhynia, 8. 5. 1945 - End of WWII and 3 more anniversaries

30. 5. 1945 – 29. 10. 1946 - Expulsion of Germans from Czechoslovakia, 22. 6. 1941 – Operation Barbarossa - Nazi attack on the USSR, 1944 - 1945 - The liberation of Czechoslovakia, 23. 2. 1949 – Beginning the forced agricultural collectivisation, 10. 7. 1946 – Agreement on Volhynian Czechs option with the USSR and 1 more anniversaries

25. 2. 1948 - Communist coup d‘état in ČSR, 1944 - 1945 - The liberation of Czechoslovakia, 10. 7. 1946 – Agreement on Volhynian Czechs option with the USSR, 17.9.1939 - Soviet invasion of Poland , 13. 7. 1943 - Destroying of Český Malín and 1 more anniversaries

17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia, 1944 - 1945 - The liberation of Czechoslovakia, 14. 3. 1939 – The foundation of the Slovak State, 12. 3. 1938 - "Anschluss" of Austria

8. 5. 1945 - End of WWII, 1989 - The fall of the iron curtain, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia

22. 6. 1941 – Operation Barbarossa - Nazi attack on the USSR, 23. 2. 1949 – Beginning the forced agricultural collectivisation, 17.9.1939 - Soviet invasion of Poland , Western Ukrainian lands within Poland 1919–1939, 1941-1944 - Nazi occupation of Ukraine and 1 more anniversaries

29. 9. 1938 - The Munich Diktat, 1940 - The Battle of France, 6. 6. 1944 - Overlord, 8. 5. 1945 - End of WWII, 25. 2. 1948 - Communist coup d‘état in ČSR and 2 more anniversaries

26 April 1986 - Chernobyl disaster

1. 9. 1939 - The outbreak of the WW2, 8. 5. 1945 - End of WWII, 1989 - The fall of the iron curtain

15. 3. 1939 - The Nazi occupation of ČSR, 25. 2. 1948 - Communist coup d‘état in ČSR, 1941 - 1945 - Transports to the concentration camps