21. 8. 1968 - Invasion of the Warsaw Pact troops, Perestroika, 5. 1. - 21. 8. 1968 - The Prague Spring, 1. 1. 1977 - Declaration of Chart 77, 28. 1. 1977 - The “Anti-Charter”

5. 1. - 21. 8. 1968 - The Prague Spring, 17. 4. 1969 – A. Dubček’s resignation, start of the “normalisation” period

5. 1. - 21. 8. 1968 - The Prague Spring, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia

5. 1. - 21. 8. 1968 - The Prague Spring, 21. 8. 1968 - Invasion of the Warsaw Pact troops, 18. - 21. 8. 1969 – mass demonstrations against Soviet occupation

5. 1. - 21. 8. 1968 - The Prague Spring, 21. 8. 1968 - Invasion of the Warsaw Pact troops

25. 2. 1948 - Communist coup d‘état in ČSR, 8. 5. 1945 - End of WWII, 15. 3. 1939 - The Nazi occupation of ČSR, 30. 5. 1945 – 29. 10. 1946 - Expulsion of Germans from Czechoslovakia, 1944 - 1945 - The liberation of Czechoslovakia and 6 more anniversaries

9. 5. 1960 - Amnesty of political prisoners, 1948 - 1955 - Politic lawsuit in the Stalin age, 5. 1. - 21. 8. 1968 - The Prague Spring

5. 1. - 21. 8. 1968 - The Prague Spring

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

5. 1. - 21. 8. 1968 - The Prague Spring, 21. 8. 1968 - Invasion of the Warsaw Pact troops, 1. 1. 1977 - Declaration of Chart 77, 8. 5. 1945 - End of WWII, 18. 4. - 10. 5. 1945 - osvobození západní části ČSR americkou armádou and 1 more anniversaries