Hi Warren: would this work? A polar dial with a world map on the face with moveable gnomon mounted to a set of hourlines(maybe etched on clear glass) that can be shifted according to the date?
This is rather hard to expain, but we can discuss it in Hartford. John Carmichael on a dial map WHERE the sun is setting by a shadow. I like the opening screen of >the NASS home page that shows the area of daylight on the planet -- but that is >the computer screen -- I like "real" maps. Has this been done on a dial? Fred >Sawyer showed in the Compendium the method Foster used to map TIME around the >world. Any ideas on this from anyone? > >Happy dialing, > >Warren Thom (Lat=41.649N Long=88.096W) - Chicago > >
