Klinghammer's computus is a mechanism determining the elements of the
computus
As a moveable feast, the date of Easter is determined in each year through a calculation known as (). Easter is celebrated on the first Sunday after the Paschal full moon, which is the first full moon on or after 21 March (a fixed approxi ...
, in particular the
date of Easter
As a moveable feast, the date of Easter is determined in each year through a calculation known as (). Easter is celebrated on the first Sunday after the Paschal full moon, which is the first full moon on or after 21 March (a fixed approxi ...
in the Gregorian calendar. This mechanism was built in the 1970s by Frédéric Klinghammer (1908–2006) and is nearly a reduced model of the computus found on the
Strasbourg cathedral astronomical clock.
Frédéric Klinghammer (1908-2006)
Frédéric Klinghammer was a former employee of the Ungerer company, a company which used to take care of the Strasbourg astronomical clock.
He was then seriously involved in the design and building of the
Messina astronomical clock
The astronomical clock of Messina is an astronomical clock constructed by the Ungerer Company of Strasbourg in 1933. It is built into the campanile of Messina Cathedral.
The mechanism was designed by Frédéric Klinghammer, with the artistic desi ...
. Later, he set down in Moulins (France) and spend the 1970s in Morocco where he built his computus.
How it works
Klinghammer's computus works along the lines of
Jean-Baptiste Schwilgué
Jean-Baptiste Schwilgué (born in Strasbourg in 1776, died in the same place in 1856) was the author of the third astronomical clock of Strasbourg Cathedral, built between 1838 and 1843 (not 1842, as it is written on the clock itself).
In 1844 Schw ...
's computus, which was described in the reference books of 1922 and 1992.
Klinghammer's computus was restored by Joseph Flores in 2006-2007 who published a book on it. Flores' book was the subject of critiques, in part because of its non scientific approach and its many gaps. Critical reviews have been published in the Mitteilungen of the Deutsche Gesellschaft für Chronometri
# 113 pages 471-472 of the "Bulletin of the National Association of Watch and Clock Collectors" (ISSN 0027-8688), vol. 50, n.4, August 2008 and in th
NAWCC fora
See also
*
Date of Easter
As a moveable feast, the date of Easter is determined in each year through a calculation known as (). Easter is celebrated on the first Sunday after the Paschal full moon, which is the first full moon on or after 21 March (a fixed approxi ...
References
*Alfred Ungerer, Théodore Ungerer: ''L'horloge astronomique de la cathédrale de Strasbourg'', 1922.
*Henri Bach, Jean-Pierre Rieb, Robert Wilhelm: ''Les trois horloges astronomiques de la cathédrale de Strasbourg'', 1992.
*Joseph Flores : ''Le comput ecclésiastique de Frédéric Klinghammer'', Besançon
AFAHA 2007, 160 pages, plus 58 minutes CD (with contributions by Denis Kleinknecht and Marc Augereau).
{{DEFAULTSORT:Klinghammer's Computus
Easter date