21. 8. 1988 – 17. 11. 1989 – Street demonstrations against the communist regime

26 April 1986 - Chernobyl disaster, 17. 11. 1989 - Demonstration at Národní třída, 21. 8. 1968 - Invasion of the Warsaw Pact troops, 18. - 21. 8. 1969 – mass demonstrations against Soviet occupation, 1989 - The fall of the iron curtain and 5 more anniversaries

1. 9. 1939 - The outbreak of the WW2, 5. – 9. 5. 1945 - Prague Uprising, 25. 2. 1948 - Communist coup d‘état in ČSR, 1948 - 1955 - Politic lawsuit in the Stalin age, 27. 5. 1942 - Assassination of R. Heydrich and 3 more anniversaries

25. 2. 1948 - Communist coup d‘état in ČSR, 1941 - 1945 - Transports to the concentration camps, 1945 - The liberation of the concentration camps, 1948 - 1955 - Politic lawsuit in the Stalin age, 24. 2. 1949 – Formation of the Czechoslovak Union of Youth and 1 more anniversaries

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, 1. 1. 1977 - Declaration of Chart 77, 21. 8. 1988 – 17. 11. 1989 – Street demonstrations against the communist regime

21. 8. 1968 - Invasion of the Warsaw Pact troops, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia, 17. 11. 1989 - Demonstration at Národní třída, 24. 4. 1978 – Formation of Committee for the Defence of the Unjustly Prosecuted, 21. 8. 1988 – 17. 11. 1989 – Street demonstrations against the communist regime

5. 1. - 21. 8. 1968 - The Prague Spring, 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, 1. 1. 1977 - Declaration of Chart 77 and 3 more anniversaries

1. 1. 1977 - Declaration of Chart 77, 21. 8. 1988 – 17. 11. 1989 – Street demonstrations against the communist regime, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia, 29. 6. 1989 – Zveřejnění manifestu Několik vět

21. 8. 1968 - Invasion of the Warsaw Pact troops, 21. 8. 1988 – 17. 11. 1989 – Street demonstrations against the communist regime, 1989 - The fall of the iron curtain, 12 November 1989 - Canonization of Agnes of Bohemia, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia and 2 more anniversaries

21. 8. 1968 - Invasion of the Warsaw Pact troops, 21. 8. 1988 – 17. 11. 1989 – Street demonstrations against the communist regime, 20. 11. – 3. 12. 1952 – Rudolf Slánský’s trial, 19. – 21. 11. 1968 – The three-day student strike and other displays of civil r, 28. 1. 1977 - The “Anti-Charter” and 2 more anniversaries