Mental modelThe World, Understood · Day 11
US clocks move on the second Sunday of March and the first Sunday of November; Arizona outside the Navajo Nation and Hawaii keep one offset all year.
Share this diagram
Diagrams share as a link — it unfurls with a preview card.
This is one mental model — a course's idea in a single picture. It comes from The World, Understood, a short daily course on Noesa. Anyone can use AI; few can tell when it's wrong.