Bible Encyclopedias
Black-Letter, Days

Cyclopedia of Biblical, Theological and Ecclesiastical Literature

are

(1) holy days recorded in the. calendars of Episcopal service-books in "blackletter "type, instead of being printed in red ink; therefore holy days of an inferior character and dignity.

(2) In the modern Church of England holy days ordered to be observed, but for which there are no special collects nor service.

Bibliography Information
McClintock, John. Strong, James. Entry for 'Black-Letter, Days'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. https://www.studylight.org/​encyclopedias/​eng/​tce/​b/black-letter-days.html. Harper & Brothers. New York. 1870.