Bloomsday is a commemoration and celebration of the life of Irish writer James Joyce, observed annually in Dublin and elsewhere on 16 June, the day his 1922 novel Ulysses takes place on a Thursday in 1904, the date of his first sexual encounter with his wife-to-be, Nora Barnacle, and named after its protagonist Leopold Bloom.

James Augustine Aloysius Joyce was an Irish novelist, poet and literary critic. He contributed to the modernist avant-garde movement and is regarded as one of the most influential and important writers of the 20th century. Joyce's novel Ulysses (1922) is a landmark in which the episodes of Homer's Odyssey are paralleled in a variety of literary styles, particularly stream of consciousness. Other well-known works are the short-story collection Dubliners (1914), and the novels A Portrait of the Artist as a Young Man (1916) and Finnegans Wake (1939). His other writings include three books of poetry, a play, letters, and occasional journalism.