21. 8. 1968 - Invasion of the Warsaw Pact troops

9. 5. 1960 - Amnesty of political prisoners, 21. 8. 1968 - Invasion of the Warsaw Pact troops, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia

30. 5. 1945 – 29. 10. 1946 - Expulsion of Germans from Czechoslovakia, 1950 - creation of the buffer zone between Czechoslovakia and Western Germany and Austria, 1951 - creation of the restricted border area along the Czechoslovakian border with Western Germany and Austria, 21. 8. 1968 - Invasion of the Warsaw Pact troops, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia

21. 8. 1968 - Invasion of the Warsaw Pact troops

8. 9. – 1. 11. 1944 - The battle of the Dukla Pass, 21. 8. 1968 - Invasion of the Warsaw Pact troops

21. 8. 1968 - Invasion of the Warsaw Pact troops, 1979 - 1989 - Sovětská invaze do Afghánistánu, 26 April 1986 - Chernobyl disaster, 2. 3. - 21. 7. 1992 - Konflikt v Podněstří

30. 5. 1953 – 3. 6. 1953 – The monetary reform and subsequent public upheaval, 21. 8. 1968 - Invasion of the Warsaw Pact troops

5. 1. - 21. 8. 1968 - The Prague Spring, 21. 8. 1968 - Invasion of the Warsaw Pact troops, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia, 25. 1. 1969 Jan Palach´s funeral

1944 - 1945 - The liberation of Czechoslovakia, 21. 8. 1968 - Invasion of the Warsaw Pact troops, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia

21. 8. 1968 - Invasion of the Warsaw Pact troops, 1962 - Cuban Missile Crisis, 25. 2. 1948 - Communist coup d‘état in ČSR, 23. 2. 1949 – Beginning the forced agricultural collectivisation

21. 8. 1968 - Invasion of the Warsaw Pact troops, 1989 - The fall of the iron curtain, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia, 26 April 1986 - Chernobyl disaster