diff --git a/app/admin/device-link-conflicts/page.tsx b/app/admin/device-link-conflicts/page.tsx
index 72d06fb..1f3ec8f 100644
--- a/app/admin/device-link-conflicts/page.tsx
+++ b/app/admin/device-link-conflicts/page.tsx
@@ -16,6 +16,7 @@ import {
 } from '@/components/ui/select';
 import { CheckCircle2, AlertTriangle, Loader2 } from 'lucide-react';
 import { PageHeader } from '@/components/navigation/page-header';
+import { useUserTimezone } from '@/lib/hooks/use-user-timezone';
 
 interface Candidate {
   ciId: string;
@@ -77,6 +78,7 @@ function dedupeCandidates(candidates: Candidate[]): Candidate[] {
 }
 
 export default function DeviceLinkConflictsPage() {
+  const tz = useUserTimezone();
   const [items, setItems] = useState<Review[] | null>(null);
   const [total, setTotal] = useState(0);
   const [error, setError] = useState<string | null>(null);
@@ -220,7 +222,7 @@ export default function DeviceLinkConflictsPage() {
                   {r.xref.serial && <span>serial: {r.xref.serial}</span>}
                   {r.xref.mac && <span>mac: {r.xref.mac}</span>}
                   {r.xref.lastSeenAt && (
-                    <span>last seen: {new Date(r.xref.lastSeenAt).toLocaleString()}</span>
+                    <span>last seen: {new Date(r.xref.lastSeenAt).toLocaleString(undefined, { timeZone: tz })}</span>
                   )}
                 </div>
               </CardHeader>
diff --git a/app/admin/itglue-writes/page.tsx b/app/admin/itglue-writes/page.tsx
index f80f518..efc3a47 100644
--- a/app/admin/itglue-writes/page.tsx
+++ b/app/admin/itglue-writes/page.tsx
@@ -8,6 +8,7 @@ import { Button } from '@/components/ui/button';
 import { Skeleton } from '@/components/ui/skeleton';
 import { Alert, AlertDescription, AlertTitle } from '@/components/ui/alert';
 import { PageHeader } from '@/components/navigation/page-header';
+import { useUserTimezone } from '@/lib/hooks/use-user-timezone';
 
 interface WriteRow {
   id: string;
@@ -47,6 +48,7 @@ function statusVariant(
 }
 
 export default function ItglueWritesPage() {
+  const tz = useUserTimezone();
   const [rows, setRows] = useState<WriteRow[] | null>(null);
   const [error, setError] = useState<string | null>(null);
   const [statusFilter, setStatusFilter] =
@@ -141,7 +143,7 @@ export default function ItglueWritesPage() {
                         <span className="font-medium">{w.field_name}</span>
                       </p>
                       <p className="text-xs text-muted-foreground mt-1">
-                        {new Date(w.performed_at).toLocaleString()}
+                        {new Date(w.performed_at).toLocaleString(undefined, { timeZone: tz })}
                       </p>
                       <p className="text-xs mt-1 break-words">
                         <span className="text-muted-foreground">Before: </span>
diff --git a/app/admin/rmm-overshell/page.tsx b/app/admin/rmm-overshell/page.tsx
index 5d42d61..2b04cc9 100644
--- a/app/admin/rmm-overshell/page.tsx
+++ b/app/admin/rmm-overshell/page.tsx
@@ -9,6 +9,7 @@ import { Alert, AlertDescription, AlertTitle } from '@/components/ui/alert';
 import { Loader2, RefreshCw, Terminal } from 'lucide-react';
 import { toast } from 'sonner';
 import { PageHeader } from '@/components/navigation/page-header';
+import { useUserTimezone } from '@/lib/hooks/use-user-timezone';
 
 interface Settings {
   overshellComponentUid: string | null;
@@ -35,6 +36,7 @@ interface ExecRow {
 }
 
 export default function RmmOvershellAdminPage() {
+  const tz = useUserTimezone();
   const [settings, setSettings] = useState<Settings | null>(null);
   const [counts, setCounts] = useState<{ total: string; running: string; failed_24h: string } | null>(null);
   const [executions, setExecutions] = useState<ExecRow[] | null>(null);
@@ -139,7 +141,7 @@ export default function RmmOvershellAdminPage() {
                     </p>
                     {settings.discoveredAt && (
                       <p className="text-[10px] text-muted-foreground mt-1">
-                        discovered {new Date(settings.discoveredAt).toLocaleString()}
+                        discovered {new Date(settings.discoveredAt).toLocaleString(undefined, { timeZone: tz })}
                       </p>
                     )}
                   </>
@@ -196,7 +198,7 @@ export default function RmmOvershellAdminPage() {
                     {settings.logliftDiscoveredAt && (
                       <p className="text-[10px] text-muted-foreground mt-1">
                         discovered{' '}
-                        {new Date(settings.logliftDiscoveredAt).toLocaleString()}
+                        {new Date(settings.logliftDiscoveredAt).toLocaleString(undefined, { timeZone: tz })}
                       </p>
                     )}
                   </>
@@ -262,7 +264,7 @@ export default function RmmOvershellAdminPage() {
                     </Badge>
                   </span>
                   <span className="col-span-3 text-xs text-muted-foreground truncate">
-                    {new Date(e.queuedAt).toLocaleString()}
+                    {new Date(e.queuedAt).toLocaleString(undefined, { timeZone: tz })}
                   </span>
                   <span className="col-span-1 text-right">
                     {e.errorMessage && (
diff --git a/app/admin/ticket-digest/page.tsx b/app/admin/ticket-digest/page.tsx
index ab81430..2dc9991 100644
--- a/app/admin/ticket-digest/page.tsx
+++ b/app/admin/ticket-digest/page.tsx
@@ -8,6 +8,7 @@ import {
   Calendar, CalendarDays, CalendarRange, MessageSquare, Bell, Globe, ExternalLink,
 } from 'lucide-react';
 import { PageHeader } from '@/components/navigation/page-header';
+import { useUserTimezone } from '@/lib/hooks/use-user-timezone';
 
 interface DigestConfig {
   daily_enabled: boolean;
@@ -73,6 +74,7 @@ function PeriodIcon({ period }: { period: string }) {
 }
 
 export default function TicketDigestPage() {
+  const tz = useUserTimezone();
   const [config, setConfig] = useState<DigestConfig | null>(null);
   const [channels, setChannels] = useState<NotificationChannel[]>([]);
   const [history, setHistory] = useState<DigestReport[]>([]);
@@ -407,7 +409,7 @@ export default function TicketDigestPage() {
                       <div>
                         <span className="font-medium text-sm capitalize">{report.period_type}</span>
                         <span className="text-xs text-muted-foreground ml-2">
-                          {new Date(report.generated_at).toLocaleString()}
+                          {new Date(report.generated_at).toLocaleString(undefined, { timeZone: tz })}
                         </span>
                       </div>
                     </div>
diff --git a/app/admin/workflow/history/page.tsx b/app/admin/workflow/history/page.tsx
index 814931c..37df302 100644
--- a/app/admin/workflow/history/page.tsx
+++ b/app/admin/workflow/history/page.tsx
@@ -32,6 +32,7 @@ import {
   ChevronRight,
 } from 'lucide-react';
 import { WorkflowExecutionWithSteps } from '@/lib/types/workflow';
+import { useUserTimezone } from '@/lib/hooks/use-user-timezone';
 
 export default function ExecutionHistoryPage() {
   return (
@@ -42,6 +43,7 @@ export default function ExecutionHistoryPage() {
 }
 
 function ExecutionHistoryContent() {
+  const tz = useUserTimezone();
   const searchParams = useSearchParams();
   const highlightId = searchParams.get('id');
 
@@ -189,7 +191,7 @@ function ExecutionHistoryContent() {
                         {exec.duration_ms ? `${exec.duration_ms}ms` : '-'}
                       </TableCell>
                       <TableCell className="text-sm text-muted-foreground">
-                        {new Date(exec.created_at).toLocaleString()}
+                        {new Date(exec.created_at).toLocaleString(undefined, { timeZone: tz })}
                       </TableCell>
                     </TableRow>
                   ))}
diff --git a/app/admin/workflow/pipelines/[id]/page.tsx b/app/admin/workflow/pipelines/[id]/page.tsx
index 0b9fb38..6ca5f12 100644
--- a/app/admin/workflow/pipelines/[id]/page.tsx
+++ b/app/admin/workflow/pipelines/[id]/page.tsx
@@ -26,6 +26,7 @@ import {
   Eye,
 } from 'lucide-react';
 import StepConfigEditor from '@/components/admin/pipeline/StepConfigEditor';
+import { useUserTimezone } from '@/lib/hooks/use-user-timezone';
 
 interface Pipeline {
   id: number;
@@ -91,6 +92,7 @@ const STATUS_ICONS: Record<string, any> = {
 };
 
 export default function PipelineEditorPage() {
+  const tz = useUserTimezone();
   const params = useParams();
   const router = useRouter();
   const pipelineId = params.id as string;
@@ -579,7 +581,7 @@ export default function PipelineEditorPage() {
                       <span className="text-sm text-muted-foreground">{exec.trigger_source}</span>
                       {exec.duration_ms && <span className="text-sm text-muted-foreground">{exec.duration_ms}ms</span>}
                       <span className="text-xs text-muted-foreground ml-auto">
-                        {new Date(exec.started_at).toLocaleString()}
+                        {new Date(exec.started_at).toLocaleString(undefined, { timeZone: tz })}
                       </span>
                     </div>
                     {exec.error_message && (
diff --git a/app/admin/zabbix-wan/page.tsx b/app/admin/zabbix-wan/page.tsx
index e748a87..b1ab64d 100644
--- a/app/admin/zabbix-wan/page.tsx
+++ b/app/admin/zabbix-wan/page.tsx
@@ -51,6 +51,7 @@ import {
 import { toast } from 'sonner';
 import { HostManager } from '@/components/zabbix/host-manager';
 import { PageHeader } from '@/components/navigation/page-header';
+import { useUserTimezone } from '@/lib/hooks/use-user-timezone';
 
 type SyncMode = 'all' | 'client' | 'site';
 
@@ -139,6 +140,7 @@ interface RmmOnlyRow { alert_uid: string; site_name: string; alert_class: string
 type PageTab = 'sync' | 'gaps' | 'correlation';
 
 export default function ZabbixWanPage() {
+  const tz = useUserTimezone();
   const [activeTab, setActiveTab] = useState<PageTab>('sync');
   const [mode, setMode] = useState<SyncMode>('all');
   const [companyId, setCompanyId] = useState<string>('');
@@ -209,8 +211,8 @@ export default function ZabbixWanPage() {
     finally { setSyncing(null); }
   };
 
-  const fmtSynced = (ts: string | null) => ts ? new Date(ts).toLocaleString() : 'Never';
-  const fmtTs = (ts: string | null) => ts ? new Date(ts).toLocaleString() : '—';
+  const fmtSynced = (ts: string | null) => ts ? new Date(ts).toLocaleString(undefined, { timeZone: tz }) : 'Never';
+  const fmtTs = (ts: string | null) => ts ? new Date(ts).toLocaleString(undefined, { timeZone: tz }) : '—';
   const fmtDuration = (s: number | null, hasRecovery?: boolean) => {
     if (s === null || s === undefined) return hasRecovery ? '< 1m' : 'Open';
     if (s === 0) return hasRecovery ? '< 1m' : 'Open';