Bible Dictionaries
Perpetual Calendar

Webster's Dictionary

A calendar that can be used perpetually or over a wide range of years. That of Capt. Herschel covers, as given below, dates from 1750 to 1961 only, but is capable of indefinite extension.

Bibliography Information
Webster, Noah. Entry for 'Perpetual Calendar'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​p/perpetual-calendar.html. 1828.