perpetual calendar

noun

1. a calendar devised to be used for many years, as in determining the day of the week on which a given date falls.
2. a desk calendar with months, days, and dates that can be changed, as by adjusting various dials, so that it may be used over and over for many years.

Word History and Origins

Origin of perpetual calendar¹

First recorded in 1890–95

Example Sentences

Hence, for the construction of a perpetual calendar, there must be thirty different sets or lines of epacts.

From Project Gutenberg

In 1849 the copyright of Levi H. Corson in a perpetual calendar or almanac was renewed by special act.

From Project Gutenberg

All these, this divine claimed, are to be found in the Gospel as in a perpetual calendar of the heart.

From Project Gutenberg

Just before each quarter is struck, one of the two genii seated above this perpetual calendar strikes a note of warning.

From Project Gutenberg