overlay

src/routes/weather/week/[location]/+page.svelte

@@ -49,7 +49,7 @@
 	let { data }: { data: PageData } = $props();
 
 	// the page cross-fade waits for this before revealing the new page
-	reportPageReady(() => fetchedDaily != null && fetchedHourly != null);
+	reportPageReady(() => (fetchedDaily != null && fetchedHourly != null) || loadError != null);
 
 	useHeroActions(heroActions);
 
@@ -211,8 +211,13 @@
 
 	// Charts intentionally keep their current range: they show the full week
 	// unless the user narrows it via the range presets or Ctrl+scroll.
+	// A model that answers with a broken timestamp must not be able to park an
+	// unreadable date in `selectedDay`: everything downstream formats it, and a
+	// date that cannot be formatted takes the page with it.
 	const switchDay = (date: Date) => {
-		runDayTransition(() => selectedDay.setTime(date.getTime()));
+		const time = date?.getTime();
+		if (!Number.isFinite(time)) return;
+		runDayTransition(() => selectedDay.setTime(time));
 	};
 
 	onMount(() => {