Sundials - World's Oldest Clocks

North American Sundial Society

The North American Sundial Society, after by-passing the 2020 Conference due to Covid restrictions, held the 26th annual meeting from August 5th - 8th at the Hilton Garden Inn, Center City, Philadelphia. The venue was similar to past conferences: Thursday night social and door prizes for attendees, Friday a bus tour of 11 sundials in the Philadelphia area, Saturday sundial presentations and annual dinner, finishing on Sunday with more sundial presentations and the annual general meeting (AGM).The dial tour took us walking through Philadelphia parks and arboratums and visits to University of Pennsylvania, Swarthmore College, and Haverford College.

2021 Swarthmore Kolhberg HallAt Swarthmore we saw the modern vertical declining dial on Kohlberg Hall, designed by Martin Cowan. Frederick Orthlieb, professor and chair of the Dept of Engineering at Swarthmore "had a part in locating the bent-plate gnomon so as to give correct indications on the vertical wall. As installed, the gnomon's indicating edge (which lies on a Polar Axis) casts quite a short shadow in Autumn and Winter and requires some observing skill to make a close estimate of indicated time, but in Spring and Summer the longer shadow moves over the granite hour marks very plainly."

For the annual group photo attendees gathered around the "Point Where Things Change", a N-S meridian dial commissioned in 2001 by the Redevelopment Authority of the City of Philadelphia and designed by Michael Grothusen. The dial is on the grounds of Tasepoint Corporate Headquarters.

 

 

2021 Group Photo

From Left to Right: Bill Gottesman, Joyce Robinson, Pam Morris, David Robinson, Bob Kellogg, George Wilson, Jack Aubert, Will Grant, Betsy Wilson, Jim Holland, Bill Thibault, Art Paque, Tish Grant, Fred Sawyer, Philomena Sawyer, Phyllis Montgomery, Jeff Kretsch , Mark Montgomery, Marvin Taylor, Zoon Nguyen, Kate Aubert, Pat O'Hearn, Roger Dignard, Paul Ulbrich.

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