perpetual calendar

(redirected from Perpetual calendars)
Also found in: Dictionary, Thesaurus.

perpetual calendar

[pər′pech·ə·wəl ′kal·ən·dər]
(astronomy)
A table or mechanical device used to determine the day of the week corresponding to any given date over a period of many years.
Mentioned in ?
References in periodicals archive ?
During her talk, Deepa delved upon key topics such as the evolution of the Perpetual Calendar, key historical Calendar watches from the brand, and the technical specificities of these grand complications.
For lovers of beautiful mechanical pieces, the famous "perpetual calendar" (which accounts for leap years) is synonymous with sophistication and exclusivity.
The Royal Oak Perpetual Calendar Only Watch, Unique Piece features the following:
"This sale includes a variety of watch 'complications', from minute repeaters to perpetual calendars which never fail to fascinate and intrigue established collectors," said Tim Bourne, international co-head of watches for Christie's.
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.