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

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

Ukraine in 1990-s., 23. 10. 1956 - Hungarian revolution of 1956 and fightings for independence, 5. 1. - 21. 8. 1968 - The Prague Spring, 21. 8. 1968 - Invasion of the Warsaw Pact troops, Ukraine in 1986–1991 and 2 more anniversaries

1990 - 1991 - Odsun sovětských vojsk z Československa, 21. 8. 1968 - Invasion of the Warsaw Pact troops