golden number

British  

noun

1. a number between 1 and 19, used to indicate the position of any year in the Metonic cycle, calculated as the remainder when 1 is added to the given year and the sum is divided by 19. If the remainder is zero the number is 19

   the golden number of 1984 is 9

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Example Sentences

Their phone number mostly consisted of the same digit repeated many times, making it a prized so-called "golden number".

From BBC • Jun. 26, 2023

On Twitter, the movement has taken on the hashtag #LaserRayUntil100K, which refers to a pledge among users to keep the laser rays until Bitcoin hits that golden number.

From Slate • Feb. 19, 2021

It is, however, only used in those years in which the epact 19 concurs with the golden number 19.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" by Various

Two winged youths take their place next to Iris, carrying the Julian period: namely, the Roman indiction, the cycle of the sun and the golden number, on a leaf of paper held between them.

From The Borghesi Astronomical Clock in the Museum of History and Technology Contributions from the Museum of History and Technology, Paper 35, the Smithsonian Institution United States National Museum Bulletin 240 by Bedini, Silvio A.

The current year will be given by the Julian period, reducible to any desired epoch, and, contained in the solar cycle, the golden number and the Roman cycle.

From The Borghesi Astronomical Clock in the Museum of History and Technology Contributions from the Museum of History and Technology, Paper 35, the Smithsonian Institution United States National Museum Bulletin 240 by Bedini, Silvio A.