Tour home base and your home city. ATOM keeps two.
THE TOUR'S HOME BASE: where the artist is based (for example Nashville). It is saved on the tour, so everyone on the tour sees it on every device: the Mac app, the phone and the website. It drives the weather on a day's Overview on travel days and days off (any day without its own city), the Run Pack, and the Weather pins. Tour managers, admins and production managers set it: on a day with no city, tap the weather tile and Set tour home base. Crew see it but can't change it; ask your TM.
YOUR HOME CITY: where you live. It is saved to your account (every device you sign in on), and it is used for things about you, like the route home on My Day. When the tour has no home base yet, the weather tile uses your home city instead, and it says "home" next to the city; the tour's says "tour home".
IF IT SAYS "No home city yet": the tour has no home base and you have no home city saved. Tap the tile and set it once; it sticks on every device. Before 2026-10-15 the home city was saved on one device only, so the Mac app, the phone and the browser each needed their own; a home city already set on a device is moved up to your account the first time that device opens ATOM.