Václav Obadálek * 1961 Relatives of important personalities, The relative of a political prisoner 27. 5. 1942 - Assassination of R. Heydrich, 30. 5. 1945 – 29. 10. 1946 - Withdrawal of Germans from Czechoslovakia, 1948 - 1955 - Politic lawsuit in the Stalin age, 25. 2. 1948 - Communist coup d‘état in ČSR, 9. 5. 1960 - Amnesty of political prisoners and 1 more anniversaries
Jana Obadálková, roz. Dobíhalová * unknown Sokol, The relative of a political prisoner 8. 5. 1945 - End of WWII, 9. 5. 1960 - Amnesty of political prisoners
Major (ret.) Josef Obr * 1923 Forced labour during the WW2, Political prisoner in the 1950‘s (ČSR) 14. 3. 1953 – Klement Gottwald’s death, 5. 1. - 21. 8. 1968 - The Prague Spring, 21. 8. 1968 - Invasion of the Warsaw Pact troops, 16. 1. 1969 – Jan Palach´s self-immolation , 1989 - The fall of the iron curtain and 1 more anniversaries
Zdena Obrová * 1931 Svědci lokálních událostí z éry komunismu 5. 1. - 21. 8. 1968 - The Prague Spring
Jiří Očenášek * 1928 A cultural celebrity, Art and censorship, Boy Scouts, Participant in antifascist resistance, Participant in Czechoslovak resistance during WW2 and 3 more categories 29. 9. 1938 - The Munich Diktat, 15. 3. 1939 - The Nazi occupation of ČSR, 1944 - 1945 - The liberation of Czechoslovakia, 1945 - 1948 - First renewal of Junák, 14. 2. 1945 - Bombing of Prague and 9 more anniversaries
Anna Očenášová * 1924 Person who lived in South Slovakia after the First Vienna Award 1938 - 1945 2.11.1938 - First Vienna Award (Hungarian annexation of Carpathian Ruthenia and South Slovakia)
Colonel Urban Ocilka * 1919 †︎ 2008 Prisoner of War/ P.O.W, Slovak army soldier during 1939 - 1945, Veteran of WW2, eastern front 1. 9. 1939 - The outbreak of the WW2, 3. - 6. 11. 1943 - Battle of Kiev, 1944 - 1945 - The liberation of Czechoslovakia, 8. 9. – 1. 11. 1944 - The battle of the Dukla Pass
Jan Odstrčil * 1937 Svědci lokálních událostí z éry komunismu, Victim of persecution due the forced agricultural collectivisation, Witnesses of local events connected to WWII 1944 - 1945 - The liberation of Czechoslovakia, 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