Sundials - World's Oldest Clocks

North American Sundial Society

Vernon  

Sundial: 933
State/Province:  British Columbia Country:  Canada
Dial Type:  Analemmatic Condition:  Good
  Latitude:   50° 14.60' N Longitude: 119° 17.133' W
Location:
  • Allan Brooks Nature Centre just outside Vernon. Follow Mission Road to Allan Brooks Way, ~3 km out of Vernon. Follow signs for the Centre and park. The dial is ~100m northwest of the Centre. Admission for entrance to the main building. Variable summer hours and closed in winter
 
Description:
  • On a barren hill sits a simple analemmatic dial in an area cleared of brush. Rather than standing on a walkway that is common for outdoor analemmatic dials, this one uses a movable poles gnomon guided in a slot. The slot is surrounded by an analemma with dates allowing the pole to be adjusted for the date of viewing. The central date scale assembly is wooden. The dial hour marks are concrete disks with glass mosaics on top created by local artist Connie Vetter-Johnson. Above the noon hour mark is a larger disk with a glass mosaic image of a hawk. Photographs of the site hint that some of the hour marks may have been inadvertantly moved out of position.

    While the dial has a central figure-8 analemma, it correctly uses a straight slot for the gnomon movement. Dates are marked on the analemma but there is no indication of the date's time variability using the Equation of Time. The Centre's published information and website implies that the dial shows mean time directly, which it does not. The analemmatic dial's characteristic ellipse is actually the projection of the equatorial circle onto the horizontal plane, rather than relating to the Earth's elliptical orbit as suggested by the pamphlet wording.
 
General Information:
  • Owner: Allan Brooks Nature Centre
  • Designer: Members of the Vernon chapter of the Royal Astronomical Society of Canada
  • Builder: RASC chapter members
  • Construction Date: 2018
 
Web Links:

Last Revised: 2018-10-24 03:44