diff --git a/deploy/deploy.yaml b/deploy/deploy.yaml
index a6b60dcc..454f7f7d 100644
--- a/deploy/deploy.yaml
+++ b/deploy/deploy.yaml
@@ -346,7 +346,9 @@ lanes:
           - internal/dev-entrypoint/cloud-web-routes.mjs
           - tools/src/hwlab-cli/trace-renderer.ts
         env:
-          TZ: Asia/Shanghai
+          HWLAB_CLOUD_WEB_DISPLAY_TIME_ZONE: Asia/Shanghai
+          HWLAB_CLOUD_WEB_DISPLAY_TIME_LOCALE: zh-CN
+          HWLAB_CLOUD_WEB_DISPLAY_TIME_LABEL: 北京时间
         observable: true
       hwlab-gateway:
         runtimeKind: bun-command
diff --git a/internal/dev-entrypoint/cloud-web-runtime.mjs b/internal/dev-entrypoint/cloud-web-runtime.mjs
index a4a92099..2e1bae16 100644
--- a/internal/dev-entrypoint/cloud-web-runtime.mjs
+++ b/internal/dev-entrypoint/cloud-web-runtime.mjs
@@ -125,12 +125,45 @@ function injectCloudWebRuntimeConfig(body) {
 }
 
 function runtimeConfigFromEnv() {
-  const config = {};
+  const config = { displayTime: displayTimeConfigFromEnv() };
   const workbench = workbenchRuntimeConfigFromEnv();
   if (workbench) config.workbench = workbench;
   return config;
 }
 
+function displayTimeConfigFromEnv() {
+  const timeZone = requiredRuntimeConfigEnv("HWLAB_CLOUD_WEB_DISPLAY_TIME_ZONE");
+  const locale = requiredRuntimeConfigEnv("HWLAB_CLOUD_WEB_DISPLAY_TIME_LOCALE");
+  const label = requiredRuntimeConfigEnv("HWLAB_CLOUD_WEB_DISPLAY_TIME_LABEL");
+  validateDisplayTimeZone(timeZone);
+  validateDisplayLocale(locale);
+  return { timeZone, locale, label };
+}
+
+function requiredRuntimeConfigEnv(name) {
+  const value = process.env[name];
+  if (typeof value !== "string" || value.trim().length === 0) {
+    throw new Error(`missing required Cloud Web runtime config env: ${name}`);
+  }
+  return value.trim();
+}
+
+function validateDisplayTimeZone(timeZone) {
+  try {
+    new Intl.DateTimeFormat("en-US", { timeZone }).format(new Date(0));
+  } catch {
+    throw new Error(`invalid HWLAB_CLOUD_WEB_DISPLAY_TIME_ZONE: ${timeZone}`);
+  }
+}
+
+function validateDisplayLocale(locale) {
+  try {
+    new Intl.DateTimeFormat(locale).format(new Date(0));
+  } catch {
+    throw new Error(`invalid HWLAB_CLOUD_WEB_DISPLAY_TIME_LOCALE: ${locale}`);
+  }
+}
+
 function workbenchRuntimeConfigFromEnv() {
   const traceTimeline = {};
   const autoExpandRunning = parseEnvBoolean(process.env.HWLAB_WORKBENCH_TRACE_AUTO_EXPAND_RUNNING);
diff --git a/web/hwlab-cloud-web/src/components/workbench/SessionRail.vue b/web/hwlab-cloud-web/src/components/workbench/SessionRail.vue
index 000b7e67..be598297 100644
--- a/web/hwlab-cloud-web/src/components/workbench/SessionRail.vue
+++ b/web/hwlab-cloud-web/src/components/workbench/SessionRail.vue
@@ -6,6 +6,7 @@ import { computed, ref } from "vue";
 import { useWorkbenchStore } from "@/stores/workbench";
 import { useClipboard } from "@/composables/useClipboard";
 import LoadingState from "@/components/common/LoadingState.vue";
+import { formatDisplayDateTime } from "@/config/runtime";
 import { workbenchSessionPath } from "@/utils";
 
 const workbench = useWorkbenchStore();
@@ -91,7 +92,7 @@ function formatSessionUpdatedTime(value: string | null | undefined): string {
   if (delta < 3_600_000) return `${Math.max(1, Math.round(delta / 60_000))} 分`;
   if (delta < 86_400_000) return `${Math.max(1, Math.round(delta / 3_600_000))} 时`;
   if (delta < 604_800_000) return `${Math.max(1, Math.round(delta / 86_400_000))} 天`;
-  return date.toLocaleString(undefined, { month: "numeric", day: "numeric", hour: "2-digit", minute: "2-digit" });
+  return formatDisplayDateTime(date, { month: "numeric", day: "numeric", hour: "2-digit", minute: "2-digit" });
 }
 </script>
 
diff --git a/web/hwlab-cloud-web/src/config/runtime.ts b/web/hwlab-cloud-web/src/config/runtime.ts
index 92225466..5c177d1d 100644
--- a/web/hwlab-cloud-web/src/config/runtime.ts
+++ b/web/hwlab-cloud-web/src/config/runtime.ts
@@ -1,5 +1,55 @@
 import type { WorkbenchTraceTimelinePolicy } from "@/components/workbench/trace-lifecycle";
 
+export interface DisplayTimeConfig {
+  timeZone: string;
+  locale: string;
+  label: string;
+}
+
+export function displayTimeConfig(): DisplayTimeConfig {
+  const config = window.HWLAB_CLOUD_WEB_CONFIG?.displayTime;
+  const timeZone = requiredDisplayTimeField(config?.timeZone, "timeZone");
+  const locale = requiredDisplayTimeField(config?.locale, "locale");
+  const label = requiredDisplayTimeField(config?.label, "label");
+  validateDisplayTimeZone(timeZone);
+  validateDisplayLocale(locale);
+  return { timeZone, locale, label };
+}
+
+export function displayTimeLabel(): string {
+  return displayTimeConfig().label;
+}
+
+export function formatDisplayDateTime(value: string | Date, options: Intl.DateTimeFormatOptions = {}): string {
+  const date = value instanceof Date ? value : new Date(value);
+  if (!Number.isFinite(date.getTime())) return String(value);
+  const config = displayTimeConfig();
+  return new Intl.DateTimeFormat(config.locale, { hour12: false, ...options, timeZone: config.timeZone }).format(date);
+}
+
+function requiredDisplayTimeField(value: unknown, field: string): string {
+  if (typeof value !== "string" || value.trim().length === 0) {
+    throw new Error(`HWLAB Cloud Web displayTime.${field} is required`);
+  }
+  return value.trim();
+}
+
+function validateDisplayTimeZone(timeZone: string): void {
+  try {
+    new Intl.DateTimeFormat("en-US", { timeZone }).format(new Date(0));
+  } catch {
+    throw new Error(`HWLAB Cloud Web displayTime.timeZone is invalid: ${timeZone}`);
+  }
+}
+
+function validateDisplayLocale(locale: string): void {
+  try {
+    new Intl.DateTimeFormat(locale).format(new Date(0));
+  } catch {
+    throw new Error(`HWLAB Cloud Web displayTime.locale is invalid: ${locale}`);
+  }
+}
+
 export function workbenchTraceTimelinePolicy(): WorkbenchTraceTimelinePolicy {
   const config = window.HWLAB_CLOUD_WEB_CONFIG?.workbench?.traceTimeline;
   return {
diff --git a/web/hwlab-cloud-web/src/stores/workbench-live.ts b/web/hwlab-cloud-web/src/stores/workbench-live.ts
index 42e379eb..bf9b4f70 100644
--- a/web/hwlab-cloud-web/src/stores/workbench-live.ts
+++ b/web/hwlab-cloud-web/src/stores/workbench-live.ts
@@ -1,3 +1,4 @@
+import { displayTimeLabel, formatDisplayDateTime } from "@/config/runtime";
 import type { ApiResult, HwpodNodeOpsResponse, HwpodSpecsResponse, LiveProbePayload, LiveSurface, Tone } from "@/types";
 import { asRecord, firstNonEmptyString, statusTone } from "@/utils";
 
@@ -148,7 +149,7 @@ export function formatTimestamp(value: unknown): string {
   if (!text) return "未观测";
   const date = new Date(text);
   if (!Number.isFinite(date.getTime())) return text;
-  return date.toLocaleString("zh-CN", { hour12: false, timeZone: "Asia/Shanghai" });
+  return formatDisplayDateTime(date, { hour12: false });
 }
 
 export function shortToken(value: unknown, size = 12): string | null {
@@ -224,7 +225,7 @@ function rowFromLiveHealth(payload: LiveProbePayload | null): BuildRow {
 }
 
 function latestBuildText(row: BuildRow): string {
-  const time = row.builtAt ? `${formatTimestamp(row.builtAt)} 北京时间` : "构建时间不可用";
+  const time = row.builtAt ? `${formatTimestamp(row.builtAt)} ${displayTimeLabel()}` : "构建时间不可用";
   return `最新镜像构建时间：${time} · ${row.label} · tag ${row.tag ?? "unknown"} · commit ${row.commitShort ?? "unknown"} · env ${row.envImageTag ?? row.envCommitShort ?? "unknown"} · revision ${row.revisionShort ?? "unknown"}`;
 }
 
diff --git a/web/hwlab-cloud-web/src/types/global.d.ts b/web/hwlab-cloud-web/src/types/global.d.ts
index aa5ef323..ce786367 100644
--- a/web/hwlab-cloud-web/src/types/global.d.ts
+++ b/web/hwlab-cloud-web/src/types/global.d.ts
@@ -2,6 +2,11 @@ declare global {
   interface Window {
     HWLAB_CLOUD_WEB_CONFIG?: {
       auth?: { mode?: "auto" | "manual"; username?: string; password?: string };
+      displayTime?: {
+        timeZone?: string;
+        locale?: string;
+        label?: string;
+      };
       workbench?: {
         traceTimeline?: {
           autoExpandRunning?: boolean;