October A.D. 1582
Month of the Gregorian Correction
Before Correction: Dominical Letter: G; Golden Number: 6; Epact: vi; Roman Indiction: 10
After Correction: Dominical Letter:C ; Golden Number: 6; Epact: xxvi; Roman Indiction: 10
The feasts mentioned by Pope Gregory XIII in the bull Inter gravissimas are shown in blue, other feasts, and all vestment colors and ranks are conjectured from modern sources.
In 1573 Pope Gregory changed the name of the feast of "Our Lady of Victory" to "Our Lady of the Rosary," to be celebrated on the first Sunday of October -- but apparently, October 1582 had no "first" Sunday!
October 2nd -- Guardian Angels established by Paul V, 1608
October 15th is today the feast of St. Teresa, but "she [Teresa of Avila] took to her bed and passed away on 4 Oct., 1582, the following day, owing to the reform of the calendar, being reckoned as 15 October" (Catholic Encyclopedia, s.v. "St. Teresa").
October 19th -- Peter of Alcantara died 18 Oct., 1562, canonized by Pope Clement IX in 1669.
October 20th -- John Cantius, canonized by Pope Clement XIII in 1767.
Last Sunday of October -- Christ the King -- established by Pope Pius XI in 1925.
7. So thus that the vernal equinox, which was fixed by the fathers of the [first] Nicene Council at XII calends April [March 21], is replaced on this date, we prescribe and order that there is removed, from October of the year the 1582, the ten days which go from the third before Nones [the 5th] through the day before the Ides [the 14th] inclusively. The day which will follow IV Nones [the 4th], when one traditionally celebrates Saint Francis [of Assisi] , shall be the Ides of October [the 15th], and there shall be celebrated this day the festival of the martyred Saints Denis [Bishop of Paris, previously confused with Dionysius the Areopagite], Rusticus [a priest of Denis'], and Eleutherius [a deacon of Denis, feast day October 9 for all three], as well as the memory of Saint Mark, [feast day October 7] pope and confessor, and of the martyred Saints Sergius, Bacchus, Marcellus and Apuleius [feast day October 7]. There shall be celebrated the following day, seventeenth calends November [October 16th], the festival of Saint Callistus[I], pope and martyr [feast day October 14] ; and then shall come XVI calends November [October 17th], the office and the mass of the 18th Sunday after Pentecost; the Sunday letter shall pass from G to C. Finally shall come the place of the fifteenth calends November [October 18th], the festival of Saint Luke the evangelist [feast day October 18] , after which will follow one another the other feastdays, in the way they are described in the calendar.
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