diff --git a/assets/js/app.ts b/assets/js/app.ts
index b532cc6b..527316d7 100644
--- a/assets/js/app.ts
+++ b/assets/js/app.ts
@@ -350,9 +350,12 @@ if (!csrfToken) {
   throw new Error('CSRF token meta tag not found')
 }
 
+// Detect user's timezone
+const userTimezone = Intl.DateTimeFormat().resolvedOptions().timeZone || "UTC"
+
 const liveSocket = new LiveSocket("/live", Socket, {
   longPollFallbackMs: 2500,
-  params: { _csrf_token: csrfToken },
+  params: { _csrf_token: csrfToken, timezone: userTimezone },
   hooks: { ...colocatedHooks, SensorChart, WebAuthnRegister, WebAuthnLogin, CopyToClipboard, ScrollToTop, AutoDismissFlash },
 })
 
diff --git a/k8s/deployment.yaml b/k8s/deployment.yaml
index fd1ab588..0f998f39 100644
--- a/k8s/deployment.yaml
+++ b/k8s/deployment.yaml
@@ -5,13 +5,13 @@ metadata:
   name: towerops
   namespace: towerops
 spec:
-  replicas: 4
+  replicas: 1
   strategy:
     type: RollingUpdate
     rollingUpdate:
-      maxSurge: 1        # Allow 1 extra pod during rollout
-      maxUnavailable: 0  # Keep all pods running during rollout
-  minReadySeconds: 10    # Wait 10s after pod is ready before continuing
+      maxSurge: 1 # Allow 1 extra pod during rollout
+      maxUnavailable: 0 # Keep all pods running during rollout
+  minReadySeconds: 10 # Wait 10s after pod is ready before continuing
   selector:
     matchLabels:
       app: towerops
@@ -20,7 +20,7 @@ spec:
       labels:
         app: towerops
     spec:
-      terminationGracePeriodSeconds: 30  # Allow 30s for graceful shutdown
+      terminationGracePeriodSeconds: 30 # Allow 30s for graceful shutdown
       imagePullSecrets:
         - name: gitlab-registry
       securityContext:
@@ -63,7 +63,7 @@ spec:
                 fieldRef:
                   fieldPath: metadata.namespace
             - name: DEPLOY_TIMESTAMP
-              value: "1970-01-01T00:00:00Z"  # Placeholder, updated by GitLab CI on deploy
+              value: "1970-01-01T00:00:00Z" # Placeholder, updated by GitLab CI on deploy
             - name: RELEASE_DISTRIBUTION
               value: "name"
             - name: RELEASE_NODE
@@ -108,7 +108,7 @@ spec:
             initialDelaySeconds: 10
             periodSeconds: 5
             timeoutSeconds: 3
-            failureThreshold: 12  # 10s + (12 * 5s) = 70s max startup time
+            failureThreshold: 12 # 10s + (12 * 5s) = 70s max startup time
           livenessProbe:
             httpGet:
               path: /health
diff --git a/lib/towerops_web/live/admin/dashboard_live.html.heex b/lib/towerops_web/live/admin/dashboard_live.html.heex
index c903de9b..5670be41 100644
--- a/lib/towerops_web/live/admin/dashboard_live.html.heex
+++ b/lib/towerops_web/live/admin/dashboard_live.html.heex
@@ -32,7 +32,7 @@
         <:col :let={log} label="Superuser">{log.superuser && log.superuser.email}</:col>
         <:col :let={log} label="Target">{log.target_user && log.target_user.email}</:col>
         <:col :let={log} label="Time">
-          {Calendar.strftime(log.inserted_at, "%Y-%m-%d %H:%M:%S")}
+          {ToweropsWeb.TimeHelpers.format_iso8601(log.inserted_at, @timezone)}
         </:col>
       </.table>
     </div>
diff --git a/lib/towerops_web/live/admin/org_live/index.html.heex b/lib/towerops_web/live/admin/org_live/index.html.heex
index dc498dfa..9eda00ef 100644
--- a/lib/towerops_web/live/admin/org_live/index.html.heex
+++ b/lib/towerops_web/live/admin/org_live/index.html.heex
@@ -10,7 +10,9 @@
         <:col :let={org} label="Name">{org.name}</:col>
         <:col :let={org} label="Slug">{org.slug}</:col>
         <:col :let={org} label="Members">{length(org.memberships)}</:col>
-        <:col :let={org} label="Created">{Calendar.strftime(org.inserted_at, "%Y-%m-%d")}</:col>
+        <:col :let={org} label="Created">
+          {ToweropsWeb.TimeHelpers.format_date(org.inserted_at, @timezone)}
+        </:col>
         <:col :let={org} label="">
           <button
             phx-click="delete_org"
diff --git a/lib/towerops_web/live/admin/user_live/index.html.heex b/lib/towerops_web/live/admin/user_live/index.html.heex
index 44da3651..85bf4b7e 100644
--- a/lib/towerops_web/live/admin/user_live/index.html.heex
+++ b/lib/towerops_web/live/admin/user_live/index.html.heex
@@ -10,7 +10,9 @@
         <:col :let={user} label="Email">{user.email}</:col>
         <:col :let={user} label="Superuser">{if user.is_superuser, do: "Yes", else: "No"}</:col>
         <:col :let={user} label="Organizations">{length(user.organizations)}</:col>
-        <:col :let={user} label="Joined">{Calendar.strftime(user.inserted_at, "%Y-%m-%d")}</:col>
+        <:col :let={user} label="Joined">
+          {ToweropsWeb.TimeHelpers.format_date(user.inserted_at, @timezone)}
+        </:col>
         <:col :let={user} label="">
           <div class="flex gap-2">
             <form action={~p"/admin/impersonate/#{user.id}"} method="post">
diff --git a/lib/towerops_web/live/agent_live/helpers.ex b/lib/towerops_web/live/agent_live/helpers.ex
index f9353917..449a6863 100644
--- a/lib/towerops_web/live/agent_live/helpers.ex
+++ b/lib/towerops_web/live/agent_live/helpers.ex
@@ -84,31 +84,35 @@ defmodule ToweropsWeb.AgentLive.Helpers do
   @doc """
   Formats a DateTime into a full date and time string.
 
-  Returns strings like "Jan 15, 2026 at 2:34 PM UTC".
+  Returns strings like "Jan 15, 2026 at 2:34 PM EST".
 
-  Delegates to ToweropsWeb.TimeHelpers.format_datetime/1.
+  Delegates to ToweropsWeb.TimeHelpers.format_datetime/2.
   """
-  defdelegate format_datetime(datetime), to: ToweropsWeb.TimeHelpers
+  def format_datetime(datetime, timezone \\ "UTC") do
+    ToweropsWeb.TimeHelpers.format_datetime(datetime, timezone)
+  end
 
   @doc """
   Formats a DateTime into a short date string.
 
   Returns strings like "Jan 15, 2026".
 
-  Delegates to ToweropsWeb.TimeHelpers.format_date/1.
+  Delegates to ToweropsWeb.TimeHelpers.format_date/2.
   """
-  defdelegate format_date(datetime), to: ToweropsWeb.TimeHelpers
+  def format_date(datetime, timezone \\ "UTC") do
+    ToweropsWeb.TimeHelpers.format_date(datetime, timezone)
+  end
 
   @doc """
   Formats a DateTime into a relative time with full datetime in parentheses.
 
-  Returns strings like "5m ago (Jan 15, 2026 at 2:34 PM UTC)".
+  Returns strings like "5m ago (Jan 15, 2026 at 2:34 PM EST)".
   """
-  def format_last_seen_with_date(nil), do: "Never"
+  def format_last_seen_with_date(nil, _timezone), do: "Never"
 
-  def format_last_seen_with_date(datetime) do
+  def format_last_seen_with_date(datetime, timezone \\ "UTC") do
     relative = format_last_seen(datetime)
-    full = format_datetime(datetime)
+    full = format_datetime(datetime, timezone)
     "#{relative} (#{full})"
   end
 end
diff --git a/lib/towerops_web/live/agent_live/index.html.heex b/lib/towerops_web/live/agent_live/index.html.heex
index af239511..d8ef9d5e 100644
--- a/lib/towerops_web/live/agent_live/index.html.heex
+++ b/lib/towerops_web/live/agent_live/index.html.heex
@@ -103,7 +103,7 @@
           </div>
           <%= if agent.last_seen_at do %>
             <div class="text-xs text-zinc-500 dark:text-zinc-400 mt-0.5">
-              {format_datetime(agent.last_seen_at)}
+              {format_datetime(agent.last_seen_at, @timezone)}
             </div>
           <% end %>
           <%= if agent.last_ip do %>
@@ -124,7 +124,7 @@
 
         <:col :let={agent} label="Created">
           <div class="text-sm text-zinc-600 dark:text-zinc-400">
-            {Calendar.strftime(agent.inserted_at, "%b %d, %Y")}
+            {ToweropsWeb.TimeHelpers.format_date(agent.inserted_at, @timezone)}
           </div>
         </:col>
 
diff --git a/lib/towerops_web/live/agent_live/show.html.heex b/lib/towerops_web/live/agent_live/show.html.heex
index 997c12ab..2f1d810e 100644
--- a/lib/towerops_web/live/agent_live/show.html.heex
+++ b/lib/towerops_web/live/agent_live/show.html.heex
@@ -68,7 +68,7 @@
           </p>
           <%= if @agent_token.last_seen_at do %>
             <p class="mt-1 text-xs text-zinc-500 dark:text-zinc-400">
-              {format_datetime(@agent_token.last_seen_at)}
+              {format_datetime(@agent_token.last_seen_at, @timezone)}
             </p>
           <% end %>
           <%= if @agent_token.last_ip do %>
@@ -150,7 +150,7 @@
       <div>
         <dt class="text-sm font-medium text-zinc-600 dark:text-zinc-400">Created</dt>
         <dd class="mt-1 text-sm text-zinc-900 dark:text-zinc-100">
-          {format_datetime(@agent_token.inserted_at)}
+          {format_datetime(@agent_token.inserted_at, @timezone)}
         </dd>
         <dd class="mt-0.5 text-xs text-zinc-500 dark:text-zinc-400">
           {format_last_seen(@agent_token.inserted_at)} (created)
@@ -160,7 +160,7 @@
       <div>
         <dt class="text-sm font-medium text-zinc-600 dark:text-zinc-400">Last Updated</dt>
         <dd class="mt-1 text-sm text-zinc-900 dark:text-zinc-100">
-          {format_datetime(@agent_token.updated_at)}
+          {format_datetime(@agent_token.updated_at, @timezone)}
         </dd>
         <dd class="mt-0.5 text-xs text-zinc-500 dark:text-zinc-400">
           {format_last_seen(@agent_token.updated_at)}
@@ -172,7 +172,7 @@
           Last Seen (Heartbeat)
         </dt>
         <dd class="mt-1 text-sm text-zinc-900 dark:text-zinc-100">
-          {format_datetime(@agent_token.last_seen_at)}
+          {format_datetime(@agent_token.last_seen_at, @timezone)}
         </dd>
         <%= if @agent_token.last_seen_at do %>
           <dd class="mt-0.5 text-xs text-zinc-500 dark:text-zinc-400">
diff --git a/lib/towerops_web/live/alert_live/index.html.heex b/lib/towerops_web/live/alert_live/index.html.heex
index 9b3cb062..ea50e007 100644
--- a/lib/towerops_web/live/alert_live/index.html.heex
+++ b/lib/towerops_web/live/alert_live/index.html.heex
@@ -106,13 +106,13 @@
               <div class="mt-3 space-y-1 text-xs text-zinc-600 dark:text-zinc-400">
                 <div>
                   <strong class="font-medium">Triggered:</strong>
-                  {Calendar.strftime(alert.triggered_at, "%Y-%m-%d %H:%M:%S UTC")}
+                  {ToweropsWeb.TimeHelpers.format_iso8601(alert.triggered_at, @timezone)}
                 </div>
 
                 <%= if alert.acknowledged_at do %>
                   <div>
                     <strong class="font-medium">Acknowledged:</strong>
-                    {Calendar.strftime(alert.acknowledged_at, "%Y-%m-%d %H:%M:%S UTC")}
+                    {ToweropsWeb.TimeHelpers.format_iso8601(alert.acknowledged_at, @timezone)}
                     <%= if alert.acknowledged_by do %>
                       by {alert.acknowledged_by.email}
                     <% end %>
@@ -122,7 +122,7 @@
                 <%= if alert.resolved_at do %>
                   <div>
                     <strong class="font-medium">Resolved:</strong>
-                    {Calendar.strftime(alert.resolved_at, "%Y-%m-%d %H:%M:%S UTC")}
+                    {ToweropsWeb.TimeHelpers.format_iso8601(alert.resolved_at, @timezone)}
                   </div>
                 <% end %>
 
diff --git a/lib/towerops_web/live/dashboard_live.html.heex b/lib/towerops_web/live/dashboard_live.html.heex
index 2c6497ea..a4ed4e82 100644
--- a/lib/towerops_web/live/dashboard_live.html.heex
+++ b/lib/towerops_web/live/dashboard_live.html.heex
@@ -163,7 +163,7 @@
                 <p class="mt-0.5 text-sm text-zinc-700 dark:text-zinc-300">{alert.message}</p>
               </div>
               <span class="text-xs text-zinc-500 dark:text-zinc-400 whitespace-nowrap">
-                {Calendar.strftime(alert.triggered_at, "%H:%M")}
+                {ToweropsWeb.TimeHelpers.format_datetime(alert.triggered_at, @timezone)}
               </span>
             </div>
           <% end %>
diff --git a/lib/towerops_web/live/device_live/index.html.heex b/lib/towerops_web/live/device_live/index.html.heex
index 26567888..03c051e7 100644
--- a/lib/towerops_web/live/device_live/index.html.heex
+++ b/lib/towerops_web/live/device_live/index.html.heex
@@ -94,11 +94,7 @@
         </:col>
         <:col :let={eq} label="Last Checked">
           <span class="text-sm text-zinc-600 dark:text-zinc-400">
-            <%= if eq.last_checked_at do %>
-              {Calendar.strftime(eq.last_checked_at, "%Y-%m-%d %H:%M")}
-            <% else %>
-              Never
-            <% end %>
+            {ToweropsWeb.TimeHelpers.format_datetime(eq.last_checked_at, @timezone)}
           </span>
         </:col>
       </.table>
diff --git a/lib/towerops_web/user_auth.ex b/lib/towerops_web/user_auth.ex
index 847f5484..eedd1e83 100644
--- a/lib/towerops_web/user_auth.ex
+++ b/lib/towerops_web/user_auth.ex
@@ -460,9 +460,30 @@ defmodule ToweropsWeb.UserAuth do
   end
 
   defp mount_current_scope(socket, session) do
-    Phoenix.Component.assign_new(socket, :current_scope, fn ->
-      build_scope_from_session(session)
-    end)
+    socket =
+      Phoenix.Component.assign_new(socket, :current_scope, fn ->
+        build_scope_from_session(session)
+      end)
+
+    # Get timezone from user profile, connect params, or default to UTC
+    user = socket.assigns.current_scope && socket.assigns.current_scope.user
+    connect_timezone = get_in(socket.private, [:connect_params, "timezone"])
+
+    timezone =
+      cond do
+        user && user.timezone -> user.timezone
+        connect_timezone -> connect_timezone
+        true -> "UTC"
+      end
+
+    # If user is logged in but doesn't have a timezone set, update their profile
+    if user && !user.timezone && connect_timezone do
+      Task.start(fn ->
+        Accounts.update_user_profile(user, %{timezone: connect_timezone})
+      end)
+    end
+
+    Phoenix.Component.assign(socket, :timezone, timezone)
   end
 
   defp build_scope_from_session(session) do