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

Launched in 1941, it was the world's first serially produced perpetual calendar chronograph.

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You’ll find his graphic perpetual calendars, snugly fitted wood animal puzzles and aluminum chairs with half-moon backs and skinny, insectlike legs.

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The 1518 series was the first by any watch manufacturer to combine perpetual calendar and chronograph.

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Baselworld, for those who don’t know a tourbillon from a perpetual calendar, is the watch industry’s equivalent of the Olympics — eight days of fierce competition mixed with globally themed pageantry.

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But at the Basel fair, he displayed a traditional mechanical timepiece — a “perpetual calendar” with bold dials and a meter showing how much energy the spring has left in it.

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