Michaelmas /ˈmɪkəlməs/, the feast of Saint Michael the Archangel (also the Feast of Saints Michael, Gabriel, Uriel and Raphael, the Feast of the Archangels, or the Feast of Saint Michael and All Angels), is a day in the Western Christian liturgical year that occurs on 29 September. In medieval England, Michaelmas marked the ending and beginning of the husbandman's year, George C. Homans observes: "at that time harvest was over, and the bailiff or reeve of the manor would be making out the accounts for the year."
In Christianity, the Archangel Michael is the greatest of all the Archangels and is honored for defeating Satan in the war in heaven. He is one of the principal angelic warriors, seen as a protector against the dark of night, and the administrator of cosmic intelligence. Michaelmas has also delineated time and seasons for secular purposes as well, particularly in Britain and Ireland as one of the quarter days.
The Eastern Orthodox Churches do not observe Michaelmas, except the Serbian Orthodox Church. The Greek Orthodox honor the archangels on 8 November instead.
Michaelmas (1977) is a science fiction novel by Algis Budrys.
The novel is set in the near future (at least at the time of writing, now actually in past time).
The public image of the eponymous protagonist, Laurent Michaelmas, is that of a world-renowned newsman. In fact, Michaelmas controls world events just as much as he reports them. His means of influence is an immensely powerful self-aware artificial intelligence called Domino, which originated as a modest telephony appliance in Michaelmas' youth. Over the years, Domino has evolved into a digital omnipresence that can penetrate and control any electronic or computerized equipment, most notably communication networks of all kinds. Domino was created by Michaelmas, and its existence is known only to him.
Domino is also the confidante and intellectual sparring partner of Michelmas, compensating in part for the loss that Michaelmas suffered when his wife was killed in an accident many years ago.
By the time of the novel, Laurent Michaelmas has successfully used his power to create and sustain world peace. One of his achievements is the success of UNAC (the fictitious United Nations Astronautics Commission). Organizing space travel as a joint international project, UNAC is important to Michaelmas as a symbol of a more united world. When an astronaut believed to have been killed in a failed mission turns up miraculously saved, a threatening scenario starts to unfold. As the novel progresses, Michaelmas slowly learns that a possible extraterrestrial presence may be interfering with the new world he has worked so hard to create.
Michaelmas is a day in the Christian calendar.
Michaelmas may also refer to: