perpetual calendar

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  • noun

Words related to perpetual calendar

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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References in periodicals archive ?
Two of the most popular complications in horology today are the rattrapante or split seconds chronograph and the perpetual calendar.
Yet another complication is a perpetual calendar watch which takes into account the differing lengths of the months and the leap year, tracked by a single wheel inside the mechanism which only moves once every four years.
PIMs are programs that, at their simplest, are essentially little black books and perpetual calendars all in one package.
Complete almanac information includes perpetual calendars, five-year holiday planners and astronomical information.
The Baume brand won gold medals at the Universal Exhibitions in Paris, London, Philadelphia and Geneva with its complication watches -- tourbillons, minute repeaters and perpetual calendars -- and was repeatedly successful in what was then the most famous chronometry competition of them all: the one held by the Kew Teddington Observatory London.