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

21. 8. 1968 - Invasion of the Warsaw Pact troops, 1989 - The fall of the iron curtain, 31. 12. 1992 Dissolution of Czechoslovakia

21. 8. 1968 - Invasion of the Warsaw Pact troops, 1989 - The fall of the iron curtain, 13. 7. 1943 - Destroying of Český Malín, Ukraine in 1986–1991, 26 April 1986 - Chernobyl disaster

15. 3. 1939 - The Nazi occupation of ČSR, 1941 - 1945 - Transports to the concentration camps, 8. 5. 1945 - End of WWII, 21. 8. 1968 - Invasion of the Warsaw Pact troops, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia

1932 - 1933 - Holodomor - Great famine in Ukraine, 1941-1944 - Nazi occupation of Ukraine, March 5th, 1953 - Death of Josif V. Stalin, 26 April 1986 - Chernobyl disaster, 21. 8. 1968 - Invasion of the Warsaw Pact troops and 1 more anniversaries

25. 2. 1948 - Communist coup d‘état in ČSR, 5. 1. - 21. 8. 1968 - The Prague Spring, 21. 8. 1968 - Invasion of the Warsaw Pact troops, 1948 - 1955 - Politic lawsuit in the Stalin age

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

Ukraine in 1990-s., Western Ukrainian lands within Poland 1919–1939, Ukrainian insurgent movement 1930–1950, 1932 - 1933 - Holodomor - Great famine in Ukraine, 21. 8. 1968 - Invasion of the Warsaw Pact troops and 8 more anniversaries

1968 - 1970 - Second renewal of Junák, 21. 8. 1968 - Invasion of the Warsaw Pact troops, 1989 - Third renewal of Junák

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