PERPETUAL CALENDAR • DICCIONARIO INGLES.COM • Definition of Perpetual calendar

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/pərpˈɛtʃuəl kˈæləndər/ Listen

Perpetual calendar

noun

A chart or mechanical device that indicates the days of the week corresponding to any given date over a long period of years.

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Etymology of 'Perpetual calendar'

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"Perpetual calendar" Quotes from Famous Books

... comfortable tree to climb, for its grey-green branches were studded with wens each armed with a keen prickle, long and tough. It offered the hospitality of its shade to man, but little else, save flowers to gladden his eyes, though it stood as a perpetual calendar, or rather floral harbinger, of some of the most excellent things in life. At a certain season its big, trilobed, hollow-stalked leaves changed from bright green to pale yellow and lingeringly fell, and often before the last disappeared, ...

— Tropic Days • E. J. Banfield

... at the beginning of the year, must, in the course of centuries, have all different values from one to thirty inclusive, corresponding to the days in a full lunar month. Hence, for the construction of a perpetual calendar, there must be thirty different sets or lines of epacts. These are exhibited in the subjoined table (Table III.) called the Extended Table of Epacts, which is constructed in the following manner. The series of golden numbers is written in a line at the top of the table, and under ...

— Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 - "Bulgaria" to "Calgary" • Various