27. – 29. 6. 1967 - The 4th Congress of Czech Writers

27. – 29. 6. 1967 - The 4th Congress of Czech Writers, 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, 1976 – The Plastic People of the Universe trial and 5 more anniversaries

27. – 29. 6. 1967 - The 4th Congress of Czech Writers, 5. 1. - 21. 8. 1968 - The Prague Spring, 1976 – The Plastic People of the Universe trial, 1. 1. 1977 - Declaration of Chart 77

1945 - 1948 - First renewal of Junák, 1948 - 1955 - Politic lawsuit in the Stalin age, 25. 2. 1948 - Communist coup d‘état in ČSR, 13. – 14. 4. 1950 – "Action K" – forceful concentration of Czech monks, 9. 5. 1960 - Amnesty of political prisoners and 6 more anniversaries