Liberian Calendar
noun
An almanac drawn up for the use of Christians at Rome and completed during the pontificate of Liberius; also called Philocalian Calendar.
- The work contains, among other things, a calendar of Roman holidays, an account of various Roman martyrs, and the Liberian catalogue..
Origin
Mid 18th century; earliest use found in Alban Butler (1709–1773), Roman Catholic priest and hagiographer.