Normally when one mentions a human sundial, we think of an analemmatic dial carefully painted on the ground with a himan gnoman standing carefully on a date in the central walkway. But you can design a sundial that works for a day or two by just having a central platform, standing on it to become a gnomon, and letting your shadow fall on marked hours drawn on the ground below. But would you stand there all day? NASA presented their Astronomical Picture of the Day showing that "on July 19th, the Astronomy Group of students in the Progymnasium Rosenfeld created a human sundial, each participant patiently playing the role of a gnomon for 10 minutes. In this timelapse video of their temporal voyage of discovery, one image was taken every 20 seconds from 8 amuntil4 pm Central European Summer Time. Drawn on the ground are the dial hour marks calculated to show the local time for that specific date. Behind, the tower clock offers a time check... The group plans a repetition of this performance next winter to compare the length of the day and the altitude of the sun."
Video by permission of Astronomie-AG, Progymnasium Rosenfeld, Till Credner, AlltheSky.com>
In January of this year we reported that the Malta 1695 vertical sundial on the wall of the Jesuits' Church, next to the Old University entrance on St. Paul Street in Valleta was in severe disrepair. Alexei Pace reports that "restoration of the 1695 sundial in Valletta, has now been completed. All the vegetation and fungal growth/mold has beeen removed and the stonework re-pointed."
Perryville Eclipse Sundial
In Perryville, Missouri, Perry County unveilled a sundial commemprating the coming August 21st total solar eclipse. Mike Mohundro, Photojournalis for Hearland News (KFVS Channel 12) interviewed Trish Erzfeld, Perry Count Heritage Tourism Director, who said "We just wanted something after the eclipse is over with that the community can be proud of and reflect back on." Mohundro went on to write "many organizations worked on this project together including Earthworks, the [North] American Sundial Society, St. Louis Stone Artist Abraham Mohler, Perry County and more."
The sundial, shown in a KFVS video and in the photo at right, is a horizontal white milk glass sundial now mounted on a large marble pedestal (watch the dial video at http://www.kfvs12.com/story/35969739/perryville-to-commemorate-eclipse-with-sundial).
On the pedestal are three plaques, one entitled "Time" explaining how to convert the sundial's solar time to civil time as told by watches and cellphones. "Not a lot of people know how to read a sundial," Erzfeld said. "It's a teaching tool as well as a historical marker here on out." The second plaque entitled "Eclipse" shows the date and time when the August 21st eclipse starts and stops as seen in Perryville said Don Snyder, local member of the North American Sundial Society. The third plaque "Sundial" indicates who was involved in creating the dial.
Mohundro quotes Erzfeld saying "Education is been our main focus through this whole solar eclipse even... There's just so many things that play into the science of it and a sundial is one of those things that people can learn from."
Jim Camden of The Spokesman-Review on 17 July 2017 reported that in Olympia, Washington, "Time has come for some restoration work on the Capitol sundial"
The Olympian dial has eight bas-relief panels depicting events in Washington State's history including the discoveries of Captain George Vancouver in 1792, the Medicine Creek Treaty between the US and Puget Sound Native Americans in 1854 and the first railroad to Puget Sound, built in 1883. This beautiful hammered brass dial by John Elliot was installed on 23 January 1959 (http://www.des.wa.gov/services/facilities-leasing/capitol-campus/memorials-and-artwork/territorial-sundial)
But the dial has had some hard times. In the mid 1990's the sundial's bronze gnomon was damaged by vandals, and now the sundial is headed for refurbishment with a new stronger gnomon and repairs to the panels where the dial face is bent and cupping. And to improve the sundial's time telling accuracy, the sundial's base and anchoring system will be improved to ensure thedial face is flat and fully horizontal.
The project is included in the operating budget of the Public and Historic Facilities funds for 2017-19, which is designated for care of campus memorials and artwork. The sundial restoration work is expected to cost less than $10,000 and will be complete in late fall of 2017.
Read more at: http://www.des.wa.gov/about/news-media-center/capitol-campus-sundial-be-removed-repairs-week-july-17
A sundial that only tells time during an eclipse? Back in 2012 Bill Gottesman designed a peculiar dial to tell time by observing the angle between the cusps of the sun during the May 2012 eclipse. Bill Gottesman is back at it with a more sophisticated version assisted by programmer Dan Axtell. This time Bill and Dan give you an animated version of the cusp line, as well as detailed information of the line angle during the eclipse.
This is for anywhere in North America that can see the partial or total eclipse. Just enter your latitude and longitude and let the software create you a personal solar eclipse sundial. PLEASE DO NOT OBSERVE THE SUN DIRECTLY WITHOUT AN APPROVED SOLAR FILTER... OR, MAKE A SIMPLE PINHOLE CAMERA FROM A CARDBOARD BOX.
To make your solar eclipse sundial, go to www.eclipsesundial.com>
Nearly 100 years ago on Dec. 3, 1918 the state of Illinois through the generosity of Mr. and Mrs Clarence Griggs provided a horizontal sundial to the Ottawa Boat Club "so that future generations may know that on this spot once stood Abraham Lincoln performing his duty as a soldier and patriot". His journey north occuring in 1832 when he visited Ottawa as a volunteer soldier in the Black Hawk War.
Now the Ottawa Historic Preservation Commission would like to refurbish the memorial in time for next year’s Illinois bicentennial. In the photo from www.mytimes.com taken several years ago, the dial had been generally neglected and the gnomon gone missing. Now the entire dial is missing. The historical commission is hoping the brass dial plate will be returned, preferable to City Planner Tami Huftel at the Ottawa City Hall. It will be accepted with no questions asked. Huftel can be called at 815-433-0161, ext. 240.
The North American Sundial Society will meet in St. Louis for their annual meeting and to observe the Great American Solar Eclipse on August 21, 2017. Cities and towns across the US are planning events and raising awareness of both the beauty and hazards of the solar eclipse. For the last two years St. Louis groups have delivered more than 100 programs to area schools, libraries, cities, parks and businesses to raise awareness of this historic event which has not happened in St. Louis since the year 1442.
Remember, except for the minute or two of totality, looking directly at the sun will do serious eye damage. Use sun-safe eyeglasses (certified safe for solar viewing) available from many source (see links below or Amazon, etc.). Read about the Great American Eclipse coming near you:
St. Louis, IL: http://stlouiseclipse2017.org/
Other Cities: http://www.eclipse2017.org/2017/in_the_path.htm