[Datetime-SIG] Visualizing the DST transitions

I just wanted to share a slide <https://docs.google.com/presentation/d/1H1tkvg_vm39jXPZbOvQLoWb32POSpTYiZx8qMtBvdSQ/pub?start=false&loop=false&delayms=3000&slide=id.gdfc9fbb2b_0_74> [1] I came across that is very similar to the sketches in PEP 495. Does anyone understand how CCTZ handles the discontinuities? [1]: https://docs.google.com/presentation/d/1H1tkvg_vm39jXPZbOvQLoWb32POSpTYiZx8qMtBvdSQ/pub?start=false&loop=false&delayms=3000&slide=id.gdfc9fbb2b_0_74