Perpetual calendar
52,01

Millenary Perpetual calendar

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  • Availability:In Stock
  • Reference:P-210
  • Brand:Antiquus

This beautiful perpetual calendar is based on the dominical letter. These letters applied by the astronomer in charge of performing the Gregorian calendar, Christopher Clavius ​​in 1582. It consists of applying a letter to the first seven days of the year, so that the letter A corresponds to January 1, B to 2nd C to January 3 and so on until the G correspopnde to January 7. The dominical letter for a particular year is that corresponding to the first Sunday of that year.

With this system and by simple calculations we can find out the day it went down a specific date and for a period of 1200 years with accuracy

It is provided with two faces: One is a partial reproduction of the "Planisferium Copernicanum" and the other side is playing a wind rose and the effigies of Galileo Galilei profile and Newton.

It is made of brass plated metal and is accompanied by a small booklet with its history and usage instructions.

In our blog you can read more about the calendars and the operation of this perpetual calendar.

 

Measures:

Height: 13 cm

width: 9.5 cm

Thickness: 1.5 cm

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