WEBSITE TRANSLATION SERVICE

• Google Translation Service
• Download Chrome Web Browser Integrated translation services in the browser

SUNDIAL SOCIETIES

• The Analemma Society
• AARS Asociación de Amigos de los Relojes de Sol (Spanish Friends of Sundials Association)
• How to join your national sundial society
• Zonnewijzerkring Vlaanderen (Sundial Society of Flanders, Belgium)
• De Zonnewijzerking (Sundial Society of the Netherlands)
• Sundial Society-Birkenau-Germany
• The British Sundial Society
• QuadrantiSolari - Links to Italia Societies
• Catalonia Sundial Society
• Orologi Solari Sundial Society of Italy
• The Japanese Sundial Society
• Deutche Gesellshaft fur Chronometrie
• La Commission des Cadrans solaires du Québec
• Commission des Cadrans Solaires de la Société Astronomique de France
• Cadrans Solaires Magazine (Sundials for All Magazine)

LINKS AND MORE LINKS

• Sundial Atlas - World List of Sundials
• Danial Roth’s Sundial Links – comprehensive
• The Sundial Mailing List - international group
• Tips for Searching the Sundial Mailing List Archive
• Google finds definitions of 'sundial'
• Wikipedia Sundials (Links, History, Math, and More)
• Illustrating Shadows
• True Time Workshop - Sundial Blog - Oleg Frolkov describes many different sundials (in Russian w/Google Translate)

EDUCATIONAL RESOURCES

• The Sundial Primer by Carl Sabanski
• Building simple sundials - European Assoc. for Astronomy Education
• Solar Energy, Eclipses and Other Pehnomena A good resource for information about solar energy
• Introduction to Sundial Types by Frans Maes (very thorough)
• Fun in the Sun - A Sundial Tutorial by Helga Nordhoff
• Sunshine in your pocket! Making a sundial for the northern hemisphere.
• Making a Sun Clock
• Sun-Earth Day Kit from NASA
• What is a Sundial? - Christopher Daniel
• Measuring the Sky - A Quick Guide to the Celestial Sphere
• Make a Simple Sundial - Instructions
• Make a Sundial - Hour Line Calculator and Video Instructions
• Watches Back in Time (Resource links found by the students of Jessica Lee)
• History of Horology - Clockmaking and Watches
• All About the Sun's Light - Simple reference to facts about sunlight
• Photos of Sundial Types (In French, but very accessible)

SUNDIAL CONSTRUCTION FOR KIDS

• PopUp Paper Sundial Calculator
• Paper Cut Out Vertical Sundial (in many languages)
• Sundials & Solar System for Kids
• Sundial Resources K-8
• Build an Equatorial LEGO Sundial
• Sundial Zone - Make a Sundial

SUNDIAL SOFTWARE & CALCULATORS

• Almanac of Solstices, Equinoxes and Cross Quarter - 2011
• Correct a Commercial Dial to your Latitude & Longitude
• Azimut und Elevation der Sonne
• Orologi Solari software program Downl oad (English)
• Computer aided dialling (CAD) links from Carl Sabanski
• DeltaCad Programs from Valentin Hristov
• Earth and Moon Viewer – amazing software views of our planet
• Illustrating Shadows
• Jürgen Giesen's GeoAstro Java Applets
• NOAA - Refraction and Other Formulas
• NOAA - Solar Position Calculator
• Precision Sundials LLC Software and Other Downloads
• Shadows Pro Sundial and Astrolabe Software
• Solar data JavaScript calculator
• Solar Position, Sun CHarts, Sky Watch,and more from Build It Solar
• Sonnenuhren Free software by Helmut Sonderegger
• Sun Position Calculator
• Sun Earth Tools for solar panels
• SUN an Excel spreadsheet calculating important information for dialists.
• Sundial generator from The Czech Republic and Slovakia
• Tools and Resources for Sun Calculations and Observations
• USNO - Naval Oceanographic Portal
• Virtual Sundial based on the Queens' College dial, Cambridge, UK.
• Welcome to the Sundial Calculator.
• zw2000 - very popular with lots of information and easy to use Fer J. de Vries

GNOMONICS, TRIGONOMETRY AND DIAL CONSTRUCTION

• Convert from deg/min/sec to decimal degrees and vise-versa
• What is Trigonometry?
• Dave's Short Trig Course
• Frequently Asked Questions About Trigonometry
• An introduction to Trigonometry
• Spherical Trigonometry - a new approach (Advanced)
• Cupola Sundial Construction Plans - John Carmichael
• A Polar Cycloid Sundial - Carl Sabanski
• NASA – Make a Sundial
• Tridux 2000 - a device for laying out mirror sundials
• Postcard Sundials - Martins Gills
• A Quest for a Civil Time Polar Sundial
• Zegary Sloneczne Sundials - Theory and Practice (Polish)
• Planetary Society Education & Outreach

ANALEMMATIC SUNDIALS

• Make your own Analemmatic Sundial
• Making an Analemmatic Sundial
• Analemmatic Sundial - How to Build One (NASS)
• Analemmatic Sundial - How to Build One (Pass.Maths.org)
• A new analemmatic sundial in Torreon, Mexico
• Two mean-time analemmatic sundials - Yvon Massé
• Longwood Gardens Analemmatic Sundial - Ken Seidelmann
• Of Analemmas, Mean Time, and the Analemmatic Sundial - Fred W. Sawyer III
• Sunclocks - Human Sundials
• Restoration of the analemmatic sundial at Besançon

ARMILLARY SPHERES

• Woodrow Wilson Memorial - Armillary Sphere 1939
• Cycle of Life Armillary Sphere - Manship
• Meridian Hill Armillary by Manship - Lost in DC
• Giant Armillary Proposed for Theodore Roosevelt Island - Manship

ASTROLABES and ISLAMIC SUNDIALS

• Sundials in Turkey (Ottoman)
• Ottoman Sundial at the Missouri Botanical Garden
• Examen del reloj solar de Ahmad ibn a.s-.Saffar
• The Astrolabe and Chaucer Lots of Information
• Build an Astrolabe
• Make Your Own Astrolabe - NOAA Instructions
• Build Your Own Astrolabe - WIth Teacher Resource Kit

BIFILAR SUNDIALS

• Wikipedia - Bifilar Sundials
• The Bifilar Sundial
• Bifilar Gnomonics Fred Sawyer
• Delta Cad software for Bifilar Sundials Vanentin Hristrov
• Universal Bifilar Sundial
• Theory of Constructing a Bifilar Sundial PDF Download

MASS DIALS

• The Aldbrough Historic Sundial in East Yorkshire
• The Kirkdale Historic 1055 AD sundial in North Yorkshire

MONUMENTAL DIALS

• Manship - 1939 New York World's Fair - Sundial "Time and the Fates of Man"
• Kiselewsk -1939 New York World's Fair - Giant Sundial "Time"
• Kazuo Matsubayashi's Asteroid Landed Softly Sundial
• Mount Laguna Observatory Sundial
• Jaipur Observatory Sundial
• Photo Essay on Jantra Mantar - Five Indian Observatories
• The Pinawa Heritage Sundial
• Perkin Horizontal and Analemmatic Sundial in Illinois
• A unique 48 foot tall sundial in Louisa, VA
• The Kentucky Vietnam Veteran's Memorial
• Design of Kentucky Vietnam Veteran's Memorial

MOON DIALS AND BEYOND TO THE PLANETS

• Moon Connection (Lunar calendar and interesting facts about the moon)
• Full Moon Declination  (University of Nebraska – Lincoln)
• Telling the Time by Moonlight
• The Moondial
• A Martian Analemma
• Mars Dial - Two Worlds, One Sun
• A Lunar Analemma
• Celestial Products: Moon Posters

GEOCACHING, SUNDIAL TRAILS, AND WAYMARKING

• Waymarking Sundials (neat - at least 8 pages)
• A Sundial Park in Genk, Belgium  (English) & (Dutch)
• Zonnewijzers in Genk (Sundials in the Genk Park)
• Sundial Trails Around the World
• St. Louis Sundial Trail
• Amsterdam Sundial Trail
• Google Earth visualize places on the entire earth

SCHMOYER SUNDIAL

• Schmoyer Sunquest Dial History
• Schmoyer Dial - Perkins Observatory
• Schmoyer Dial - Precision Sundials
• Schmoyer Dial - On Facebook
• Schmoyer Dial - St. Louis

SUNDIALS AT RAILROAD STATIONS

• Templecombe Railway Station Analemmatic Sundial, Somerset UK
• Union Station Horizontal Dial - Los Angeles CA United States
• Sundial at Railway Station in Lenk, Switzerland
• Sun Pointer at Amersfoor Central Station, Netherlands
• Sundials at Santa Fe Railroad Station Dodge City Kansas US (need photos)
• Osaka Station Sundial, Japan
• Liverpool Road Station Sundial - 1830's Manchester Railway Terminus UK
• Topiary Sundial Nairobi Train Station of Busch Gardens Tampa FL US

SUNDIAL AND ASTRONOMICAL VIDEOS

ANCIENT STONE ALIGNMENTS

• Video: Solstice 2007 at Newgrange - Resequenced 6 Minute Version
• Video: Newgrange - Megalithic Marvel – Ancient Inside, 1970’s Outside
• Video: Tomb of Newgrange - Nat'l Geographic
• Video: Stonehenge Astronomical Observatory
• Video: Secrets of Stonehenge - National Geographic
• Video: Stonehenge Monument - National Geographic
• Video: New View on Stonehenge Burials - National Geographic
• Video: New Stonehenge Discovery - National Geographic
• Video: Ancient Monuments of Isle of Man
• Video: Sun's Natural Light at Yosemite Horsetail Falls
• Video: Sun Dagger at Chaco Canyon - Several Videos of the Sun Dagger
• Video: 3D Tour of the Sun Dagger at Chaco Canyon
• Video: Maes Howe Chambered Cairn

ANTIKYTHERA MECHANISM - THE ANCIENT CELESTIAL COMPUTER

• Visit    Antikythera - Machine of the Cosmos website for video links
• Video: Antikythera Exhibition at National Archaeological Museum
• Video: Antikythera Mechanism - PBS Nova
• Video: Antikythera Mechanism - 2D
• Video: Antikythera Tomographic Slices of Fragment A
• Video: Antikythera Underwater World
• Video: Antikythera Mapping the Shipwreck
• Video: Antikythera Decoding the 2000 Yr Old Computer (BBC)

ASTRONOMY FUNDAMENTALS

• Video: University of Illinois Astronomy Play List

MEASURING TIME AND SUN TRANSITS

• Video: Sundials and Latitude - A description of sunlight falling on the earth
• Video: Measuring Time Through the Centuries – Stonehenge to Digital Watches
• Video: Science Online - Our Planet is a Clock
• Video: NASA - Transit of Venus

MERIDIANA

• Video: Sun on Cassini's Meridian in San Pertronio - Bologna (In Italian)
• Video: La Meridiana di S. Maria degli Angeli - Roma– nice
• Video: Meridiana Modica – Watch a Spot of Sun
• Video: La Meridiana della chiesa della Visitazione di Perinaldo
• Video: La Linea del Sole - Museo Storia/ Scienza - Firenze (in Italian)
• Video: Sun on Cassini's Meridian in San Pertronio - Bologna (In Italian)
• Video: La Meridiana di S. Maria degli Angeli - Roma– nice
• Video: La Meridiana della chiesa della Visitazione di Perinaldo
• Video: Watch the Analemma Over New Jersey

MAKING SUNDIALS AND GNOMONICS

• Video: Gino & Judith Schiovone Create the Bowie Portal Sundial 2011
• Video: Brief History of Sundials and How to Make & Use Them - J. Warren
• Video: Tony Moss Making a Sundial - BBC News
• Video: Large Analemmatic Built for Malta School
• Video: Greenwich Dolphin Sundial
• Video: Focusing Sundial of Bill Gottesman
• Video: Digital Sundial at Burning Man -  A Digital Sundial goes up in smoke
• Video: Sundials - Canadian Science and Technology Museum
• Video: Make an Equatorial Sundial w/CD and Toothpick (Tilt CD to 90-Latitude)
• Video: Measuring Time Through the Centuries – Stonehenge to Digital Watches
• Video: TED Lecture - Sending a Sundial to Mars - Bill Nye
• Video: A number on Equation of Time: K.Karney Precise Directions

HISTORICAL BUILDINGS & SUNDIALS

• Video: 17th Century Sundial Discovered at Historic Jamestown
• Video: A 3D Tour of the Pantheon in Rome (In Italian)
• Video: Architecture of the Pantheon (Architecture Documentary)
• Video: History and Architecture of the Pantheon
• Video: Longyearbyer Sundial
• Virtual Tour: The Jantar Mantar Observatory - Google Arts & Culture

SUNDIAL PHOTO GALLERIES

• John Carmichael Stained Glass Sundials From Around The World
• John Carmichael Sundial Cupolas, Towers & Painted Wall Sundials
• Sundials and Theory of Dials at Les cadrans solaires par Jean Pakhomoff
• Willy Leenders Zonnewijzers In Limburg and Neatherlands
• Photo Essay on Jantra Mantar - Five Indian Observatories
• Cadrans Solaires Website - Joël Robic
• Gallery of Sundials of the Month - Frans Maes
• Atlas of Sundials - More than 12,000 photos around the world
• Sundials of the Camino
• Sundials of Scotland - Dennis Cowan
• Gallery of Sundials in Cities Around the World (in Russian)

SUNDIALS IN THE ARTS

• Sundials in the Movies -  François Blateyron
• Holbein's Ambassadors polyhedral and cyl indrical sundials
• Holbein's - The Secret of The Ambassadors
• Holbein's Sundials & Instruments
• Mario Arnaldi's collection La Gnomonica nell'Arte
• Kaii Higashiyama (1908 - 1999)
• Franz Marquis Von Bayros (1866 -1924)
• The Measurers: a Flemish Painting of Mathematics in the Sixteenth Century
• Rosse tti's Dantis Amor (3 images)
• Rossetti's Beata Beatrix
• M. C. Escher - sundial
• Poem For a Day - Jiyeon Song

TIME SYSTEMS and LONGITUDE

• 1884 International Prime Meridian Conference - Full Text
• Video: 1884 Longitude Conference
• About the measure of time
• A Brief History of Time Zones
• A Brief History of Time - From Thales to Callippus
• Coordinated Universal Time
• Greenwich Observatory - The Prime Meridian
• Legislative Specification for Coordinating with Universal Time
• Requirements for Universal Time Coordinated and Civil Timekeeping
• Time Zone Map
• The Future of Time: UTC and the Leap Second
• The Longitude of Greenwich and its relationship to GPS
• World Time Zone Map - USNO
• World Cities - Time and Weather
• Why the U.S. Wants To End the Link Between Time and Sun
• Why the Greenwich Meridian Moved
• WGS-84 and the Greenwich Meridian
• Why the U.S. Wants To End the Link Between Time and Sun

CALENDARS - FROM BABYLON TO TODAY

• Astronomical Calendars – Sea and Sky
• Calendrical and Astronomical Links
• How the Date of Easter is Determined
• Calen dar and Timekeeping at Ancient Qumran – the Judean luni-solar calendar
• Mayan Hieroglypics and the Dresden Codex
• Mayan Calendar and the DresdenCodex
• Venus and the Dresden Codex
• Babylonian Calendar and the Venus Table of Ammisaduqa
• On the Astronomical Records and Babylonian Chronology
• The Venus Tablets of Ammizaduga (1928)

EQUATION OF TIME AND THE ANALEMMA

• Graphical Explanation of the Equation of Time
• Calendar Systems of the World
• Equation of Time Website - Kevin Karney
• The vernal equinox also the autumnal equinox
• Photographing the Analemma with a Pin-Hole Camera
• Amazing Gallery of Analemma Photos - Anthony Ayiomamitis
• Analemma - NASA Photo of the Day – Anthony Ayiomamitis
• Analemma - an extensive explanation - Bob Urschel

MERDIANA - SOLAR LINES IN THE CHURCH

• The Line of the Sun - Institute and Museum of History of Science
• Meridian of Milan Cathedral
• Meridian of Fossombrone
• Meridian of Santa Maria degli Angeli
• Eclipses And Pin-Hole Sundials The eclipse of 1999
• The Meridian Gnomon of Saint Sulpice
• Saint Sulpice Summer Solstice Plaque
• Meridiane in Piemonte (Italian)
• Meridian at the Paris Observatory

ANCIENT DIALS and ALIGNMENTS

• The Tower of Radkan - Solar Observatory - An Iranian site ~1261 AD
• Radkan Tower of Iran
• Egyptian Sundial from Thutmosis III (dated 1479-1425 BCE)
• Egyptian Sundial from Ramsesside Period (dated 1292 – 1069 BCE)
• Reconstruction of Ancient Egyptian Sundials & Methods
• Sunrise on the Equinox + 1
• Solar alignments at the Arc de Triomphe Link 1 Link 2 Link 3
• The Sun Dagger in Chaco Canyon
• Chaco Canyon Solstice Project
• Sun Dagger – NASA article
• View from an Anasazi Cave - William Calvin
• Medicine Wheel
• Obliquity Applet – Compute earth’s obliquity over the ages
• Equinox - The Mayan Astronomers
• Megalithic Tomb at Knowth - Ireland
• Megalithic Tomb at Newgrange - Ireland
• Ancient Sundials of Ireland
• Ancient Astronomical Alignments – NASA article - Dr. Sten Odenwald
• Sun Watchers Through Time – NASA multimedia
• Callanish Stones

HISTORICAL SUNDIALS

• Largest Sundials - Jaipur and Jantar Mantar Sundial legacy of Jai Singh II
• Centuries of Stained Glass Sundials
• Reproduction of Thomas Jefferson's Spherical Sundial
• Scientists identify sundial at Qumran
• Lo strumento astronomico di QUMRAN - Nuove interpretazioni(PDF - Italian)
• A polyhedral dial attributed to Nicholas Kratzer
• Astronomic Clock of Prague See the Excel spreadsheet at the bottom of the page.
• Athens: The Tower of the Winds
• Histoire de la mesure du temps (French)
• Queens' College Dial
• The MacTutor History Archive of Mathematics
• Gnomonic Blocks-15th Century Multi-Faceted Sundials
• History of Astronomy - Instruments - University of Bonn
• Augustus' sundial

MUSEUMS, PLANATERIUM AND SUNDIAL COLLECTIONS

• Institute and Museum of History of Science Florence
• Sundial park in Genk, Belgium
• Sundials in the National Maritime Museum
• Epact: Scientific Instruments of Medieval and Rennaissance Europe
• Sundials of Germany
• Museo Galileo Excellent short videos on sundials, astrolabes, and more
• Old quadrant in the Museum of the History of Science, Oxford
• A walk through time - National Institute of Science & Technology
• Sundial pages at the Bremen Planetarium (German)
• Adler Planetarium Sundial Collection (Search the Collection)

REFERENCE BOOKS

• The Book Of Sun-Dials originally compiled by the late Mrs. Alfred Gatty
• Chapter-II The Book Of Sun-Dials A Celebration of Women Writers
• Digital Library - Univ of Pennsylvania - Celebration of Women Writers
• Google Book Search – All the Standard Sundial Books in Print
• BSS Sundial Glossary – John Davis
• Sundial Books
• Sun Dials and Roses of Yesterday  Earl - 1902
• de Architectura - Book IX  Marcus Vitruvius - Roman MS on science and sundials

GENERAL

• The Sundial - the time in light and shadow games (Italian)
• Explore the Sundial and Astronomical Interests of Reinhold Kriegler (German)
• Science & Society Picture Library Sundials
• Sundials in the Garden - Scott Arboretum
• Robert Adzema's sundial at the Hyatt in Jersey City
• Derbyshire Sundials
• A Few Sundials - Bill Thayer
• Tony Moss' "Multi Dial"
• Cadrans solaires Explanation of the Equation of Time (French)
• Magnetic Declination
• The Longyearbyen Sundial (Most northern sundial)
• Sundials At New College, Oxford (PDF)
• Sundials at Wadham College, Oxford (PDF)
• Sundials - The New Zealand Garden Journal
• Sundials- Brooke Clarke - many links
• The Homepage of Mario Arnaldi
• Convert geographical co-ordinates: - decimal to d,m,s; and vise- versa
• Sundials National Institute of Standards and Technology
• Sundials - Encyclopaedia Brittannica
• Sundial Mottos - Wikipedia
• Sundial Mottos - Sundials on the Internet
• Gnomonics Riccardo Anselmi (Italian, English)
• Solis et Artis Opus Mario Arnaldi (Italian)
• Gnomonica Rosa Casanova (Italian)
• Mario Arnaldi (Italian)
• Gnomonique par Yvon Massé (French)

DIALS AROUND THE WORLD

• Truman State University's Solar Clock Garden (or horologium florae, or floral sundial)
• The Earth &Sky Equatorial Sundial by John Carmichael
• Greenwich - Dolphin Sundial 
• Greenwich - Dolphin Sundial History
• Perranzabuloe Millenium Sundial - Cornwall
• Precision sundial in Tholey (German)
• The Amble Dial - (England)
• A giant sundial in Cornwall (Proposed)
• Lumbutts Sundial - West Yorkshire
• Sundial on the Atelier Acacia in Mont-Dauphin (Haute Alpes, France)
• "Child Sundial" at the Missouri Botanical Garden
• Stellafane Russell Porter Sun Clock
• Queens' College Dial
• Sundial at Fort Oranje, St.Eustatius, Dutch Caribbean.
• A Mirror Sundial in Bremen
• Sundial in Beijing
• British Sundialists visit White Rock, Vancouver
• London-Footprints Sundials
• Czech Republic and Slovakia
• Prague Sundial Trail
• Proposed Sundial for Reykjavik, Iceland
• Sundials in Ireland
• Cadrans Solaires en Alsace
• Cadrans Solaires de Paris
• Cadrans Solaires France
• Cadrans Solaires de Paris (French)
• L'Obélisque de la Concorde (French)
• Zonnewijzers, schaduw van de tijd  (Dutch) Wiley Leender -Sundials of Flanders
• Sonnenuhren in Trier (German)
• Sonnehurenfreunde der Region Basel
• A new sundial in Bremen (German)
• Bremen - (German)
• Sonnenuhr (German)
• Sonnenuhren - Daniel Roth (German)
• Some sundials in Rome
• Orologio Solare Equatoriale - Pisa (English
• Imago Romae Horologium- The sundials of Grottaferrata, Rome
• Cuadrantes Solares De Yucatán, México
• Sundials of Limburg - a province of Flanders (in Dutch – Willey Leenders- click around)
• Gnomonica cadrans solaires de Belgique
• A sundial at Kochi Castle (Japan)
• Saracinesco, the town of sundials
• Long Island City Sundial (U.S. proposed sundial project)
• Turtle Bay Bridge (U.S. Redding CA Santiago Calatrava’s)
• Sundials of Yugoslavia
• A Virtual Tour
• Opening Day at Sundial Bridge

MISCELLANEOUS SUNDIAL ARTICLES

• The Kellogg's Raisin Bran Sundial
• McDonald's makes a McSundial
• Sundial on a computer chip
• Pilkington Gibbs Heliochronometer
• Make various sundials including one using your fingers
• There used to be a sundial here...
• Use the wisdom of the sun to aim a satellite dish.

ANTIQUE DEALERS

• Galai Collectibles
• Tesseract
• Epact - Scientific Instruments of Medieval and Renaissance Europe

SUNDIAL DEALERS

• Digital Sundials International and how it works: Digital Sundial Patent
• David Brown Sundials - Sundial Making & Letter Cutting
• Helios Sundials (German Firm  Text in English)
• Sundials Australia
• A Stonehenge watch
• Zegary Sloneczne (Polish Artisans)
• See the NASS webpage NASS Sundial Artisans