Such a cool mini-format and clever time-travel mechanics!
Could you clarify how span boxes work - two questions:
1. How much time exactly a traveler needs to rest to clear one span box? If it's just a minute - then, is it 12 minutes for all 12 boxes?
2. Let's say a traveler wants to jump from 2000's New York to ancient Rome to save Caesar. Calculating magnitude: 9 (for millennia) + 9 (for around the world) = 18. Let's say a traveler has all 12 span boxes clear - do they end up gaining a weirding and 6 marked boxes, or they simply aren't allowed to jump that far?