21. 8. 1968 - Invasion of the Warsaw Pact troops, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia, 9.11.1989 - The fall of the Berlin Wall, 1989 - The fall of the iron curtain, 3.10.1990 - Reunification of Germany

17. 11. 1939 – Closure of Czech universities, 5. 1. - 21. 8. 1968 - The Prague Spring, 1989 - The fall of the iron curtain

1. 9. 1939 - The outbreak of the WW2, 25. 2. 1948 - Communist coup d‘état in ČSR, 5. 1. - 21. 8. 1968 - The Prague Spring, 1989 - The fall of the iron curtain, 1940 - The Battle of France and 2 more anniversaries

23. 2. 1949 – Beginning the forced agricultural collectivisation, 14. 3. 1953 – Klement Gottwald’s death, 21. 8. 1968 - Invasion of the Warsaw Pact troops, 1989 - The fall of the iron curtain

5. 1. - 21. 8. 1968 - The Prague Spring, 1989 - The fall of the iron curtain

30. 5. 1945 – 29. 10. 1946 - Expulsion of Germans from Czechoslovakia, 1989 - The fall of the iron curtain

1951 - creation of the restricted border area along the Czechoslovakian border with Western Germany and Austria, 5. 1. - 21. 8. 1968 - The Prague Spring, 21. 8. 1968 - Invasion of the Warsaw Pact troops, 17. 4. 1969 – A. Dubček’s resignation, start of the “normalisation” period, 1989 - The fall of the iron curtain and 3 more anniversaries

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, 29. 6. 1989 – Zveřejnění manifestu Několik vět

17. 11. 1989 - Demonstration at Národní třída, 5. 1. - 21. 8. 1968 - The Prague Spring, 1. 1. 1977 - Declaration of Chart 77, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia, 9. 5. 1960 - Amnesty of political prisoners and 5 more anniversaries

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, 1944 - 1949 Greek civil war, 28.10.194 - 23.4.1941 Greek- Italian war and 1 more anniversaries