This is for a fictional project, but the tools I need will more likely be found here in Earth forum, I think. Move to fiction if necessary. I want to render a map of Earth with the "poles" of the grid in a different place. Say, the South "pole" of the grid is at Tierra del Fuego (ish) in S. America. The North "pole" of the grid naturally will be at its antipodes. A Great Circle will define all points equidistant from these poles - a tilted equator. What I'm really after is not about an actual axis of rotation. I want to make a crude grid (just 30 or even degrees per segment or so) that will show - for any chosen point on the Earth - how far it is, and in what direction it is (a Great Circle) to Juan de Fuca and its antipodes. I've started by using Google maps to "measure distance" from point to point, which gives me partial Great Circles. These make crude "longitudinal" lines, but now I want crude "latitude" lines (which are essentially all points equidistant from the poles). Google maps is Mercator Projection-like so the lines form sine-like curves - very difficult to manually draw in latitudes. Can anyone suggest how I might do this with only a modicum of effort? Any online tools that might allow me to draw poles and lines on a map of Earth?