more translations

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

@@ -173,15 +173,38 @@
 
 	// Apply ?day= once the forecast is in: the parameter is a plain calendar date,
 	// which only means something against the location's own timezone.
-	let appliedDayParam = false;
+	// A `?day=` outside what this page can ever show (more than 3 days back, or
+	// beyond the 15-day horizon) is dropped and we open on today. A day that IS
+	// reachable but sits outside the default 7-day window widens the request up
+	// front, so the link loads straight into the right day instead of showing
+	// today and making the visitor click.
+	let wantedDay: string | null = $state(null);
+	onMount(() => {
+		const param = get(page).url.searchParams.get('day');
+		if (!param || !/^\d{4}-\d{2}-\d{2}$/.test(param)) return;
+
+		const target = Date.parse(`${param}T12:00:00Z`);
+		if (Number.isNaN(target)) return;
+		const today = new Date();
+		today.setUTCHours(12, 0, 0, 0);
+		const offset = Math.round((target - today.getTime()) / 86_400_000);
+
+		if (offset < -3 || offset > 15) return; // out of reach: stay on today
+		wantedDay = param;
+		if (offset < 0) pastDays = 3;
+		if (offset >= 7) forecastDays = 15;
+	});
+
+	// Select it as soon as a fetch arrives that actually covers the day.
 	$effect(() => {
 		const fd = fetchedDaily;
-		if (appliedDayParam || !fd) return;
-		appliedDayParam = true;
-		const wanted = get(page).url.searchParams.get('day');
-		if (!wanted) return;
+		const wanted = wantedDay;
+		if (!fd || !wanted) return;
 		const match = fd.dailyDates.find((d) => formatZoned(d, fd.timezone, 'yyyy-MM-dd') === wanted);
-		if (match) selectedDay.setTime(match.getTime());
+		if (match) {
+			selectedDay.setTime(match.getTime());
+			wantedDay = null;
+		}
 	});
 
 	// Mirror the open day and the plotted model back into the URL.
@@ -189,8 +212,11 @@
 		const dayKey = selectedDayKey;
 		const model = params.models?.[0];
 		if (!mounted || !dayKey) return;
+		const isToday = fetchedDaily
+			? dayKey === formatZoned(new Date(), fetchedDaily.timezone, 'yyyy-MM-dd')
+			: false;
 		syncSearchParams($page.url, {
-			day: dayKey,
+			day: isToday ? null : dayKey,
 			model: model && model !== 'best_match' ? model : null
 		});
 	});