Each path belongs to a single eclipse, and each is nearly transparent: where they overlap, the colour darkens by itself. The darkest regions are therefore those the shadow visits most often, and the pale background shows what no central eclipse will touch in the whole century.
The paths flare out enormously at both ends. This is not a drawing error: that is the moment when the shadow reaches the Earth at sunrise, or leaves it at sunset. It then grazes the globe, and its track spreads over thousands of kilometres for a few seconds of central phase.
TotalAnnularEach path at 24 % opacity: the overlaps do the rest.
Every path comes from the computation chain of the Novilune app, on the DE441 ephemeris of the Jet Propulsion Laboratory: the same geometry as the maps on the eclipse pages, and as the app itself. The path is drawn step by step, one quadrilateral per instant of the course, between its two limits. The base map comes from Natural Earth.