What's New Under The Sun
Elements of Dialing Course - 2025
Monday, 15 September 2025 19:42
NASS is pleased to announce the upcoming fifth instance of Elements of Dialing, our introductory course about sundials, their history, and the science that makes them work. The free 12-lesson course, intended for those are new to sundialing, runs from 27 October 2025 until 26 April 2026. The course instructor is Robert Kellogg, NASS Vice President and Sundial Registrar. Bob will be...
Sun Queen of World War II
Thursday, 11 September 2025 23:11
A Hungarian born American scientist, Mária Telkes (1900-1995), was called "The Sun Queen" and among other honors, was postmousthly inducted into the National Inventors Hall of Fame. She lived to 95 and for most of her life developed solar power in a variety of forms.
Trained as a biophysicist, she worked for Westinghouse Electrical and Manufacturing Company in Pittsburgh, PA, where she...
2025 Conference -Ottawa
Thursday, 28 August 2025 23:25
The annual NASS Conference was held 7-10 August, 2025 in Ottawa. As usual, the conference began late Thursday afternoon with an introduction social and a "grab bag give away", taking your chances with tickets to win the bag's prize. Will Grant was the final winner of the Walton Double Planar Polar Sundial, but Paul Ulbrich beat the statistic odds and won this prize three times,...
Prosciutto di Portici Sundial's Owner
Tuesday, 10 June 2025 18:51
Prosciutto di Portici (Ham) Sundial
Photo: Getty Images
The Prosciutto di Portici Sundial, more often called the Portici Ham Sundial, dates from the first century somewhere between 8 BCE to 79 CE. This small silvered bronze dial was uncovered on 11 June, 1755 in the ruins of Herculaneum (current day Portici) in the "Villa of the Papyri", buried in...
Hamilton Dial Dedicated
Friday, 06 June 2025 21:01
Sundial dedication May 31, 2025. At left is Kathleen Stuckey Fox, with the City Proclamation presented by Mayor Pat Moeller and City Council on-lookers Carla Fiehrer and Susan Vaughn offering congratulations.
On May 31, 2025 at 1pm, the Hamilton, Ohio, sundial (NASS Sundial Registry #1109) was re-dedicated in Monument Park. Originally dedicated in 1941 to the...
Frans Maes Received a Royal Decoration
Monday, 24 March 2025 21:33
Several years ago Frans decided to write the course on sundials that included self assessment questions to force students not only to read the text, but to internalize the concepts. And a final submittal question "not necessarily a difficult question, but: no answer, no new lesson." Thus Frans Maes began writing lessons and sending them out to students.
NASS has now used his material to create...
Pros and Cons of Daylight Savings Time
Monday, 24 March 2025 15:37
In a 24 March 2025 article from the on-line Science Advisor (American Association for the Advancement of Science) Phie Jacobs summarizes the "great debate" of the yearly shift from standard time to daylight savings time. In January 2025 the US Senate introduced the Sunshine Protection Act to permanently have daylight savings time year round. Certainly 54% of Americans do not like the...
Native American Moon Alignment Ring
Friday, 21 March 2025 19:26
Perhaps the most famous alignment circle in the United States is the Cahokia Woodhenge near St. Louis constructed between 700-1400 CE by Cahokia Indigenous native Americans. But there were an estimated 10,000 other earthen mounds that once were scatter across the mid-west..
In an article from Atlas Obscura (https://www.atlasobscura.com/articles/octagon-earthworks-ohio) by Olivia Young on March...
Hamilton Dial under Restoration
Friday, 21 March 2025 18:37
The Hamilton dial is in the restorative care of Jarrett and Celene Hawkins (Hawkins & Hawkins Custom, LLC in Cincinnati Ohio https://www.studio-hawkins.com/) in preparation for the dial's dedication on Saturday, May 31, 2025.
The face of the Hamilton Grand Army of the Republic (GAR) sundial has been cleaned and bead-blasted showing the dial as it was cast 84 years ago. In the process,...
VSSC Space Museum gets Polar Sundial
Tuesday, 17 December 2024 23:47
In November 2024, a team consisting of members from SPL, TTDG and CMD of VSSC successfully designed and installed an accurate and fully functional sundial at the Rocket Garden of VSSC Space Museum, Thumba (8.53°N, 76.86°E). Following a space theme, the vertical gnomon is a 3-stage rocket that casts its daily and seasonal shadow on a dial face 1 1/2 meters by 1 meter. The the sundial face...
Historic Sundials of Andalusia
Saturday, 16 November 2024 00:07
Esteban Martínez Almirón has published a new book Historical Sundials: Forgotten Andalusian Treasures (Relojes de Sol Históricos Tesoros Andaluces Olvidados) In it he reviews over 400 sundials from the Andalucian region of southern Spain Originally to celebrate the 25th year of the website https://relojandalusi.org/
Esteban Martínez Almirón began showing his sundial drawings on the site....
Shelbyville Sundial
Wednesday, 13 November 2024 19:36
It isn't often that a sundial face is created before the gnomon is attached. In Shelbyville IN a large, circular art piece in the form of a sundial, was created at the Blue River Trailhead early in 2024. If they had chosen an analemmatic sundial, a walker of the trail could have simply stood on the appropriate date and used his or her own shadow to tell the local solar time. ...
Washington Monument Sundial
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Today it is snowing in Washington DC and it brings to mind a winter some 43 years ago when the Washington Monument was turned into a sundial. Over the years many have proposed turning this spiring monument into a sundial. For example at the first North American Sundial Society (NASS) Conference in 1995 Robert Terwilliger drew a map of the shadow's excursion from Independence Avenue to E Street NW, repeated here at left. In June 2011 in the NASS Quarterly Journal The Compendium Robert Kellogg suggested that "...the precise shadow lines drawn in [Terwilliger's map] are precise geometrical constructs. The problem is the sun is not a point source, but a disk about 1/2 degree in diameter. The result is the sun casts a penumbral (partial) shadow when it is partially obscured, resulting in a range of light to dark sunlight that blurs the edges of shadow, making a gradient from light to dark.
To get a feeling for the impact of the penumbral shadow from the Washington Monument, we start with a brief summary of the Monument: A competition was held in 1836 and won by architect Robert Mills who designed a tall obelisk. Excavation began in early 1848 and the cornerstone was laid as part of the 4th of July ceremony by the Freemasons. Lack of funds created a hiatus in construction in 1858, and finally the capstone to create a pyramidal point to the obelisk was laid December 6th, 1884. The obelisk as we see it today is 169.29 meters tall, 16.8 meters wide at the base and 10.5 meters wide at the start of the capstone pyramid. The pyramid itself is 17m tall, with a small aluminum capstone at the tip and by the time the sun is sufficiently blocked by the top of the oblesk for us to see the shadow, the sun is well below the tip.
Campbell University Sundial Commemorates Math Professor
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Mathematics professor Jerry Duncan Taylor passed away in 2013, but his 46 years of teaching lives on at Campbell University in Buies Creek North Carolina just south of Raleigh. A commemorative sundial in front of Taylor-Bott Rogers Fine Arts Building was dedicated on Wednesday, March 21, 2016.
The highly polished dial, approximately 12 inches square, with an inclined bar gnomon sits on a plinth embedded in a low brick wall for all to see. There are time marks for every 10 minutes, with standard time given as Roman numerals and daylight savings time one hour later given in larger Arabic numbers.
Professor and mathematics department chair Meredith Williams recalled the start of his teaching career at Campbell: "I'm not sure I would have made it through my first semester without Dr. Taylor. I had an extremely challenging group of students in a class who were determined to see how hard they could push the new professor. Dr. Taylor always had an encouraging word for me before I went to class."
Rachel Davis quoted Provost Mark Hammond from the sundial dedication (http://www.campbell.edu/news/item/sundial-dedicated-to-late-math-professor) "We wanted something physical that we could see, celebrate, and reflect on him and the good man that he is and the way he has touched many of the people here... [his] very inspired spouse, Louise Taylor, thought that perhaps we could memorialize Jerry through a sundial. It gives us the time to pause and reflect and think about Jerry."
Southern Arkansas University Dedicates Sundial
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The large analemmatic sundial in front of the Harton Theater North Entrance of Southern Arkansas University (SAU) is being formally dedicated on Thursday, November 5th, 2016 in memory of the late David Thomas Smith, a 1957 SAU alum and retired assistant director of the SAU Physical Plant.
The Smith Sundial, funded by family and friends of David Smith was built by the SAU Department of Art and Design and engineers of the SAU Physical Plant. Patrick Finney was the construction supervisor and Steven Ochs was the project concrete art designer and craftsman. As described in the NASS Sundial Registry, Dial #800 is "a 22 by 17 foot analemmatic dial of stained concrete with Arabic hour numerals of polished brass. The dial perimeter and hour numerals are set in a blue decorative polymer "U" arc, appearing as a large mule shoe that represents the university Muleriders mascot symbol. Dial colors represent the royal blue and gold school colors."
As reported by Southern Arkansas University, "The Smith Sundial at SAU is one of only four Arkansas sundials that are registered on the North American Sundial Society, and the only one outside of Little Rock and North Little Rock. It is also the only sundial in the state that is [a monumental] analemmatic..."
Read more at: https://web.saumag.edu/news/2015/10/28/sau-to-dedicate-smith-sundial-on-nov-5/
November 11th Veterans Memorial
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 Anthem Veterans Memorial
Sun Alignment on Nov 11th
[photo: Anthem Veterans Memorial Committee and Mike Spinelli]
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The Anthem Veterans Memorial in Anthem, AZ was dedicated on November 11, 2011 at 11am (11-11-11 11:11:11) to honor the service and sacrifice of the United States armed forces and to provide a place of honor and reflection for veterans, their family and friends. Veterans gather here annually on November 11th to watch a solar alignment at 11:11am when the sun precisely illuminates The Great Seal of the United States. The memorial was designed by Renee Palmer-Jones, and constructed under the guidance of Project Engineer Jim Martin and construction expert Steve Rusch.
 anthem-veterans-memorial-construction.pdf | [ ] | 262 kB |
| anthem-veterans-memorial-design.pdf | [ ] | 16 kB |
| anthem-veterans-memorial-fact-sheet.pdf | [ ] | 33 kB |
| anthem-veterans-memorial-history.pdf | [ ] | 33 kB |
| anthem-veterans-memorial-planning-committee.pdf | [ ] | 49 kB |
VLA Sundial Memorial
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 Bracewell Memorial Sundial at VLA
Photo Credit: NRAO/AUI/NSF
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In 1961 Professor Ronald Bracewell at Stanford University created an X shaped array (called a “Chris-Cross array” for W.R. “Chris” Christiansen) using 32 10-foot diameter dish antennas to form a radio spectroheliograph nestled in the hills of Palo Alto, California.
| Ron_Bracewell_Radio_Sundial_Brochure.pdf | [ ] | 1780 kB |
9/11 Timeless Sundial Dedicated In Hampton, N.J.
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Tom Carpenter, a member of the Hampton fire company for 44 years, presented plans for a 9/11 memorial to the Borough Council at the beginning of 2012 and Councilman James Cregar began designing the memorial as a sundial using beams recovered from Ground Zero of the Twin Towers.
9-11 Memorial Sundial Dedicated at Croton Landing
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On September 11, 2012 the Town of Cortlandt and the Villages of Buchanan and Croton-on-Hudson in New York will dedicate a giant sundial as part of a 9-11 memorial using steel salvaged from the World Trade Center site. All are welcome to the dedication.
Visitors attending the dedication of the Buchanan*Cortlandt*Croton-on-Hudson (BCC) 9-11 Remembrance Memorial are asked to assemble at 2:30 pm at the Croton Landing parking lot and walk the 1/2 mile to the memorial site for the 3 o’clock ceremony. A van will be available for those who wish to ride. For further information, please call the Project Director, Janet Mainiero at 914-271-8222.
| 769_10_Gazette_Newspaper_Article_Dial_Dedication.pdf | [ ] | 883 kB |
| 769_10_The_Gazette_Article_on_Dial_Dedication.pdf | [ ] | 883 kB |
| 769_11_Details_of_Nine_Dial_Medallions.pdf | [ ] | 107 kB |
| 769_11_Nine_Dial_Medallions.pdf | [ ] | 107 kB |
| 769_12_Architect_Site_Elevation_Plan.pdf | [ ] | 66 kB |
| 769_13_Architect_Site_Plan.pdf | [ ] | 553 kB |
| 769_14_Architect_Sundial_Geometry_Plan.pdf | [ ] | 349 kB |
| 769_30_Poem-Reach_Through_The_Shadow.pdf | [ ] | 11 kB |
Read more: 9-11 Memorial Sundial Dedicated at Croton Landing
Fischer Dial Dedicated in New Milford, CT
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[photo courtesy of volunteers at the McCarthy Observatory ]
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On Saturday, June 9th 2012, the volunteers of the John J. McCarthy Observatory in New Milford, CT, dedicated a 9-foot stainless steel sundial as the centerpiece of “Galileo’s Garden” adjacent to the John J. McCarthy Observatory. The sundial was built and dedicated in memory of Kathleen Fischer, a sixth-grade science teacher who inspired many students to pursue science.
The sundial is an open armillary, with an adjustable hour band for standard and daylight time. At the tip of the gnomon is a bronze and brass true-size rendering of Galileo’s first telescope, honoring the 400 years since Galileo explored the heavens. The North American Sundial Society was privileged to donate to this effort.
Hampton to Build 9/11 Memorial Sundial
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Todd Petty reported in the Hunterdon County Democrat that Tom Carpenter, a member of Fire Company 13 for forty-three years, presented plans to the city council for a 9/11 memorial in Veteran’s Park located in Hampton Borough, New Jersey.
The park has memorials honoring local veterans from The Great War to those of the conflicts in Iraq and Afghanistan. During the twin tower collapse of 9/11 Tom Carpenter recalled, “Thank God we didn’t have anyone from Hampton Borough, but Lebanon and Bethlehem did. We did respond to Ground Zero within hours …and spent two days there. Hampton does have a direct connection [to 9/11] and we’re proud of it.”
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