Bloomsday is an annual celebration of James Joyce’s monumental novel Ulysses. The novel is set on 16 June 1904, and the first modern commemoration took place on that day in 1954, when Flann O’Brien, Patrick Kavanagh, AJ Cronin and others gathered (and failed) to commemorate the journey of Leopold Bloom – the novel’s main character the the novel’s main narrative plank.
Since that first commemoration it has evolved into a much loved tradition. Here is a video of the printing of a Bloomsday poster at Barking Angels Press, for the organisers of one of the local celebrations that take place throughout Ireland.