21. 8. 1968 - Invasion of the Warsaw Pact troops, 1. 1. 1977 - Declaration of Chart 77, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia

29. 8. 1944 - April 1945 - The Slovak National Uprising, 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, 10. 7. 1946 – Agreement on Volhynian Czechs option with the USSR

8. 9. – 1. 11. 1944 - The battle of the Dukla Pass, 22. 6. 1941 – Operation Barbarossa - Nazi attack on the USSR, 10. 7. 1946 – Agreement on Volhynian Czechs option with the USSR

8. 9. – 1. 11. 1944 - The battle of the Dukla Pass, 1948 - 1955 - Politic lawsuit in the Stalin age, 10. 7. 1946 – Agreement on Volhynian Czechs option with the USSR, 31. 5. – 8. 6. 1950 – Milada Horáková’s trial

8. 5. 1945 - End of WWII, 1943 - Conflict between Poles and Ukrainians in Eastern Galicia and Volhynia, 1941-1944 - Nazi occupation of Ukraine, Organization of Ukrainian nationalists (1929 - 1950 рр.), 10. 7. 1946 – Agreement on Volhynian Czechs option with the USSR and 2 more anniversaries

1944 - 1947 - Population Transfers from the Ukrainian - Polish Borderlands, 10. 7. 1946 – Agreement on Volhynian Czechs option with the USSR, 21. 8. 1968 - Invasion of the Warsaw Pact troops

1. 9. 1939 - The outbreak of the WW2, 22. 6. 1941 – Operation Barbarossa - Nazi attack on the USSR, 13. 7. 1943 - Destroying of Český Malín, 17.9.1939 - Soviet invasion of Poland , 1940 - 1941 - Deportations of Poles to USSR and 1 more anniversaries

8. 9. – 1. 11. 1944 - The battle of the Dukla Pass, 1944 - 1945 - The liberation of Czechoslovakia

1. 9. 1939 - The outbreak of the WW2, 8. 9. – 1. 11. 1944 - The battle of the Dukla Pass, 1944 - 1945 - The liberation of Czechoslovakia, 30. 5. 1945 – 29. 10. 1946 - Expulsion of Germans from Czechoslovakia, 10. 7. 1946 – Agreement on Volhynian Czechs option with the USSR and 1 more anniversaries

Western Ukrainian lands within Poland 1919–1939, Ukrainian insurgent movement 1930–1950, 17.9.1939 - Soviet invasion of Poland , 13. 7. 1943 - Destroying of Český Malín, 10. 7. 1946 – Agreement on Volhynian Czechs option with the USSR and 3 more anniversaries