Biko Day, noun phrase
The 12th of September, the anniversary of the death in police custody in 1977 of Steven Biko, a leading figure in the Black Consciousness Movement (see Black Consciousness sense 2). Also attributive.
1984 Daily Dispatch 13 Sept. 7Yesterday was the anniversary of the death of the black consciousness leader, Mr Steve Biko, who died in detention in 1977. Student organisations had called for the commemoration of Biko Day.
1991 L. Martin in E. Prov. Herald 2 Apr. 6The country needs to investigate the official list of public holidays, and I look forward to holidays such as Sharpeville Day, Soweto Day, and Biko Day being recognised paid holidays.
The 12th of September, the anniversary of the death in police custody in 1977 of Steven Biko, a leading figure in the Black Consciousness Movement (see Black Consciousness sense 2). Also attributive.

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