Vespers may be said or sung at any time after midday,.
From the date of the Sicilian Vespers (1283) Aragon is found mixed in the politics of Italy.
This again is followed by vespers, with a special anthem; after which the altar is stripped in silence.
The invasion, however, failed, and Michael so far had his revenge in the "Sicilian Vespers," which he helped to bring about.
At mass and vespers the mitra simplex may be substituted for it in the same way as the auriphrygiata for the pretiosa.