diff --git a/CHANGELOG.md b/CHANGELOG.md
index 87b5f30..b51f94f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,6 +27,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   sequence numbers, followed by a lightweight `FETCH (UID)` to resolve them
   to stable UIDs; all subsequent operations (`FETCH`, `STORE`) continue to
   use the UID form.
+- **Dashboard: fix UTC hour-shift on "Last check" timestamps** — the dashboard
+  page was using `new Date(iso)` which treats timezone-naive ISO strings from
+  the backend as local time, shifting relative labels (e.g. "1h ago" instead
+  of "Just now") for users outside UTC.  The dashboard now uses the same
+  `parseUTC()` helper that the logs page already applied.  The helper functions
+  `formatRelative`, `formatDate`, and `formatDuration` have been consolidated
+  into `src/lib/date-utils.ts` and are imported by all pages.
 
 ## v0.4.2 (2026-03-28)
 
diff --git a/frontend/src/app/admin/logs/page.tsx b/frontend/src/app/admin/logs/page.tsx
index a614da9..80832e0 100644
--- a/frontend/src/app/admin/logs/page.tsx
+++ b/frontend/src/app/admin/logs/page.tsx
@@ -8,7 +8,7 @@ import { useAuthStore } from '@/store/authStore';
 import { useRouter } from 'next/navigation';
 import { useEffect } from 'react';
 import { adminApi, AdminProcessingRun } from '@/lib/api';
-import { parseUTC } from '@/lib/date-utils';
+import { formatDate, formatDuration } from '@/lib/date-utils';
 import {
   Activity,
   ChevronLeft,
@@ -25,19 +25,6 @@ const STATUS_STYLES: Record<string, string> = {
   running: 'bg-blue-100 text-blue-800',
 };
 
-function formatDuration(seconds?: number | null): string {
-  if (seconds == null) return '—';
-  if (seconds < 60) return `${seconds.toFixed(1)}s`;
-  return `${Math.floor(seconds / 60)}m ${Math.round(seconds % 60)}s`;
-}
-
-function formatDate(iso: string): string {
-  return parseUTC(iso).toLocaleString(undefined, {
-    dateStyle: 'short',
-    timeStyle: 'medium',
-  });
-}
-
 export default function AdminLogsPage() {
   const { user } = useAuthStore();
   const router = useRouter();
diff --git a/frontend/src/app/dashboard/page.tsx b/frontend/src/app/dashboard/page.tsx
index 5e5f74e..47c6c8e 100644
--- a/frontend/src/app/dashboard/page.tsx
+++ b/frontend/src/app/dashboard/page.tsx
@@ -4,6 +4,7 @@ import { AuthGuard } from '@/components/AuthGuard';
 import { DashboardLayout } from '@/components/DashboardLayout';
 import { useQuery } from '@tanstack/react-query';
 import { mailAccountsApi, MailAccount } from '@/lib/api';
+import { formatRelative } from '@/lib/date-utils';
 import Link from 'next/link';
 import {
   Mail,
@@ -16,17 +17,6 @@ import {
   Inbox,
 } from 'lucide-react';
 
-function formatRelative(iso?: string | null): string {
-  if (!iso) return 'Never';
-  const diff = Date.now() - new Date(iso).getTime();
-  const minutes = Math.floor(diff / 60000);
-  if (minutes < 1) return 'Just now';
-  if (minutes < 60) return `${minutes}m ago`;
-  const hours = Math.floor(minutes / 60);
-  if (hours < 24) return `${hours}h ago`;
-  return `${Math.floor(hours / 24)}d ago`;
-}
-
 interface StatCardProps {
   title: string;
   value: string | number;
diff --git a/frontend/src/app/logs/page.tsx b/frontend/src/app/logs/page.tsx
index 9a47161..749685b 100644
--- a/frontend/src/app/logs/page.tsx
+++ b/frontend/src/app/logs/page.tsx
@@ -5,7 +5,7 @@ import { AuthGuard } from '@/components/AuthGuard';
 import { DashboardLayout } from '@/components/DashboardLayout';
 import { useQuery } from '@tanstack/react-query';
 import { processingRunsApi, mailAccountsApi, MailAccount, ProcessingRun, ProcessingLog } from '@/lib/api';
-import { parseUTC } from '@/lib/date-utils';
+import { formatRelative, formatDate, formatDuration } from '@/lib/date-utils';
 import {
   Inbox,
   ChevronLeft,
@@ -19,31 +19,6 @@ import {
   AlertTriangle,
 } from 'lucide-react';
 
-function formatRelative(iso?: string | null): string {
-  if (!iso) return 'Never';
-  const diff = Date.now() - parseUTC(iso).getTime();
-  const minutes = Math.floor(diff / 60000);
-  if (minutes < 1) return 'Just now';
-  if (minutes < 60) return `${minutes}m ago`;
-  const hours = Math.floor(minutes / 60);
-  if (hours < 24) return `${hours}h ago`;
-  return `${Math.floor(hours / 24)}d ago`;
-}
-
-function formatDate(iso: string): string {
-  return parseUTC(iso).toLocaleString(undefined, {
-    dateStyle: 'short',
-    timeStyle: 'medium',
-  });
-}
-
-function formatDuration(seconds?: number | null): string {
-  if (seconds == null) return '—';
-  if (seconds < 60) return `${seconds.toFixed(1)}s`;
-  const totalSecs = Math.floor(seconds);
-  return `${Math.floor(totalSecs / 60)}m ${totalSecs % 60}s`;
-}
-
 function RunDetailRow({ run }: { run: ProcessingRun }) {
   const [expanded, setExpanded] = useState(false);
   const [logsPage, setLogsPage] = useState(1);
diff --git a/frontend/src/lib/date-utils.ts b/frontend/src/lib/date-utils.ts
index f41868e..d21716a 100644
--- a/frontend/src/lib/date-utils.ts
+++ b/frontend/src/lib/date-utils.ts
@@ -14,3 +14,40 @@
 export function parseUTC(iso: string): Date {
   return new Date(/Z|[+-]\d{2}:?\d{2}$/.test(iso) ? iso : iso + 'Z');
 }
+
+/**
+ * Format an ISO-8601 UTC timestamp as a human-readable relative time string
+ * (e.g. "3m ago", "2h ago", "1d ago").  Returns "Never" for falsy input.
+ */
+export function formatRelative(iso?: string | null): string {
+  if (!iso) return 'Never';
+  const diff = Date.now() - parseUTC(iso).getTime();
+  const minutes = Math.floor(diff / 60000);
+  if (minutes < 1) return 'Just now';
+  if (minutes < 60) return `${minutes}m ago`;
+  const hours = Math.floor(minutes / 60);
+  if (hours < 24) return `${hours}h ago`;
+  return `${Math.floor(hours / 24)}d ago`;
+}
+
+/**
+ * Format an ISO-8601 UTC timestamp as a locale-aware short date + medium time
+ * string, e.g. "28.03.26, 22:19:44".
+ */
+export function formatDate(iso: string): string {
+  return parseUTC(iso).toLocaleString(undefined, {
+    dateStyle: 'short',
+    timeStyle: 'medium',
+  });
+}
+
+/**
+ * Format a duration in seconds as a human-readable string,
+ * e.g. "3.1s" or "2m 5s".  Returns "—" for null/undefined input.
+ */
+export function formatDuration(seconds?: number | null): string {
+  if (seconds == null) return '—';
+  if (seconds < 60) return `${seconds.toFixed(1)}s`;
+  const totalSecs = Math.floor(seconds);
+  return `${Math.floor(totalSecs / 60)}m ${totalSecs % 60}s`;
+}