1909 - Yusuf Mohamed Dadoo born in Krugersdorp, Transvaal, on September 5. the son of a well-to-do Indian businessman.
1927 - Matriculates at Aligrah college in India, after attending school in Krugersdorp and Johannesburg.
1929 - Arrives in London to study medicine. Arrested for demonstrating against imperialism. His father insists he transfer to Edinburg.
1936 - After qualifying as a doctor .LCRP and LRCS (Edin.) and LRFP and S. (Glas.). Dadoo returns to practice in South Africa. Active in Transvaal Indian Congress.
1938 - One of the founders of the Non-European United Front in Johannesburg.
1939 - Joins the Communist Party of South Africa. Forms nationlist bloc in Transvaal Indian Congress to work for progressive policies and leadership.
1940 - Arrested for printing and distributing a Non-European United Front leaflet which said " Don't support this war, where the rich get richer and the poor get killed". Refuses to pay fine 25, but saved from imprisonment by a supporter who pays fine for him.
1941 - Arrested for allegedly inciting African people in a speech at Benoni meeting. Refused to pay fine of 40, and goes to jail. On release he is restricted under Emergency Regulations.
1941 - After Nazi attack on Soviet Union in June, Communist Party declares the character of war has changed. Dadoo one of those entrusted with raising support for anti Nazi struggle.
1943 - Opens anti-pass conference called Johannesburg by CPSA.
1945 - Member of delegation to government protesting against pass laws.fined 25 for taking part in unauthorised procession.
1945 - National Anti- pass Council elected with Dr. A.B.Xuma, ANC President as chairman and Dadoo as vice chairman.
1945 - nationalist bloc defeats reactionaries in Transvaal Indian Congress leadership. Dadoo elected TIC president.
1946 - One of the leaders pf passive resistance against Smut's anti Indian laws. Serves six months prison sentence.
1946- Arrested with 50 others on charge under Riotous Assemblies Act of inciting 100,000 African mineworkers to go on strike after it had broke out.
1947 - Together with Dr G.M. Naicker, leader of the Natal Indian Congress, tours Indian to win support for passive resistance campaign against Smut's Ghetto Act. Meets Gandhi, Nehru and Jiinnah.
1947 - Historic Dadoo-Xuma-Naicker pact signed pleading co-operation of Africans and Indians in struggle against discriminatory and oppressive laws and demanding full franchise rights for all.
1948 - Dadoo and Naicker sentenced to six months imprisonment for defying 1913 Immigration Act prohibiting Indians from moving from one province to another without permit.
1948 - On release from prison, Dadoo refused permission to leave South Africa to present Indian case to United Nations.
1948 - after Nationalist victory in general elections, calls for national convection to defeat the apartheid regime.
1948 - Leaves South Africa without passport to attend UN session in Paris. Meets Nehru in London, Dimitrov in Bulgaria. Visits other socialist countries. Travels on to India where he addresses Constituent Assembly on disabilities of Indians and other oppressed in SA. Vists Pakistan.
1949- On return home, banned from speaking in 8 main centers of the country.
1950 - Elected President of the South African Indian Congress.
1951 - Active in campaign against disfranchisement of Coloured voters. Calls for all-out resistance to Group Areas Act.
1952 - Elected one of five members of the Joint Planning Council to organise Defiance of Unjust laws campaign. (The others are J.B. Marks, Walter Sisulu, Dr J.S. Moroka and Y. Cachalia.)
1952 - Banned under Supression of Communism Act from attending all gatherings and ordered to resign from Indian Congress and Joint Planning Council of Defiance Campaign. Defies his ban, addresses meetinng and sentenced to six months imprisonment - his seventh prison sentenced (quashed on appeal on a legal technicality).
1952 - Together with 19 others, charged under Suppression of Communism Act for organising defiance Campaign and given suspended sentence of 9 months imprisonment for what the judge called "statutory communism"
1953 - Banned from taking part in the activities of a further 15 organisations.
1953 - Dadoo elected to central committee of newly constituted SA Communist Party at first congress held illegally in Johannesburg.
1955 - Announcement made at historic Congress of the People that Dadoo, Chief Albert Lutuli and Father Trevor Huddleston awarded traditional African decoration of Isitwalandwe-Seaparankoe. Because of bans only Huddleston able to attend, but Dadoo's award accepted by his mother.
1957 - Dadoo banned for a further five years from attending gatherings.
1959 -Arrested at Howick, Natal, under immigration laws banning Indian movement form province to province without permission.
1960 - After Sharpeville shooting and declaration of State of Emergency Dadoo sent overseas by decision of Communist Party and Indian Congress to organise external apparatus and solidarity campaigns.
1962 - After arrest of Nelson Mandela. Dadoo leads procession in London demanding his release. Visits India and has talks with Nehru.
1969 - Elected vice-chairman of the Revolutionary Council of the African National Congress.
1972 - After the death of J.B.Marks, elected national chairman of the South African Communist Party.
At the time of his death Dr Dadoo was national chairman of the SACP, a vice-chairman of the ANC Politico-Military Council, and a member of the Presidential Committee of the World Peace Council, in whose activities he had taken a prominent part for many years. He had led many delegations of the SACP to many different parts of the world and was a firm champion of the International Communist Movement. On his 70th birthday he was awarded the Order of Dimitrov of Bulgaria, the Order of Karl Marx by the German Democratic Republic, the Order of the Friendship of the People by the Soviet Union, the Gold Medal of the Afro-Asian People's Solidarity Organisation, the Scroll of Honour of the world Peace Council, the Decoration of the Hungarian Peace Movement and the 'Wielki Proletariat of Poland'