The American Church Dictionary and Cycopedia
Michael (St.) and All Angels
A Holy Day of the Church observed on September 29th. A Festival in honor of St. Michael and All Angels, to commemorate the community of service between angels and men, has been observed since the Fifth Century. Formerly two days were dedicated to St. Michael, viz., May 8th and September 29th, and in medieval times a third, on October 16th, but the day most generally observed was that which we now keep. In the Eastern Church, St. Michael's Day is November 8th, while March 26th and July 13th are observed in honor of the Archangel Gabriel. These two, Michael and Gabriel, are the only angels or archangels whose names are mentioned in the Bible. St. Michael and All Angels' Day is observed with great solemnity. Proper Psalms are appointed being the 91st and 103d for Morning Prayer, and the 34th and 148th for Evening Prayer. There are also Proper Lessons, and Collect, Epistle and Gospel. The Church color is white. (See HOLY ANGELS.)
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Miller, William James. Entry for 'Michael (St.) and All Angels'. The American Church Dictionary and Cyclopedia. https://www.studylight.org/dictionaries/eng/acd/m/michael-st-and-all-angels.html. 1901.