(www.manchesteronline.co.uk/news/stories/Detail_LinkStory=48875.html) tells us that Craig Martin's sundial works at night, Wow! -
Several years ago I sent a copy of my Hours to Sunset [sundial design and construction] manual to a fellow out in Colorado. When he asked if an hours til sunset dial worked at night, I told him yes, but only if he used an alternate source of illumination.
He wrote back that he had a solar powered flashlight. Best wishes, Mac Oglesby -
