Is this all one large map? If so, since minecraft is flat, where do they cutoff the map (presumably you can’t go around the globe like in the real world)? Are they building based on the Mercator projection?
Edit: First result on Google search (I was absentmindedly using bing earlier) is what I need : https://www.instructables.com/Dymaxion-Earth/
Fun fact: Dymaxion was invented by Buckminster Fuller of geodesic dome fame.