September 2021
Page 2

Islamic Sundials Signed by al-Mansur Carrying Dates in the Late 17th Century: An Examination of their Gnomonic and Historical Anomalies

Examines ten mosque sundials signed by al-Mansur and dated 1671–1681 AD. These instruments feature epigraphic anomalies and non-functional gnomonic layouts, including inaccurate hour lines and prayer indications. The authors conclude these sophisticated yet flawed dials are likely modern ‘fakes’.
Dials: Horizontal, Mathematics of Dialling, Historical Dials

Fathi Jarray
Eric Mercier
Denis Savoie

March 2015
Page 17

New Book

An announcement and review of Denis Savoie’s book, *Recherches Sur Les Cadrans Solaires* (2014). The work is praised for its extensive coverage of gnomonic topics, ranging from the ancient world to the modern, and for seamlessly integrating the history and underlying mathematics of dial work.
Book Reviews, Mathematics of Dialling, Historical Dials

Denis Savoie

December 2014
Page 2

An Exceptional Sundial

This article describes a unique horizontal sundial/meridian instrument constructed by Claude Langlois in 1741 for Alexandre de la Rochefoucauld at the château de la Roche-Guyon. The instrument features a large brass box gnomon with a slit and seven eyelets, allowing the spots of light to correspond to significant dates, such as the solstices and the entry of the sun into zodiac signs.
Dials: Horizontal, Dials: Noon Lines, Dials: Unusual, Historical Dials

Denis Savoie
Anthony Turner

March 2013
Page 20

Report on the Greek Dial from Delos Stored in The Louvre (MA 4823)

A scholarly report on a fragmentary Greek sundial held in the Louvre. The authors discuss its geometry, probable use, and its place in the evolution of ancient dial types.
Dials: Astrolabe, Dials: Equatorial, Dials: Hemispherical, Historical Dials

Jérôme Bonnin
Denis Savoie

February 1991
Page 30

Departmental Distribution of French Sundials

Presents maps illustrating the number of sundials found in different departments of France and Corsica. The data includes records up to the end of 1989, gathered by the Commission of Sundials in Paris.

Denis Savoie