diff --git a/apps/web/tests/scaffold.ts b/apps/web/tests/scaffold.ts
index 1b8afbb247..7a48c4d8ac 100644
--- a/apps/web/tests/scaffold.ts
+++ b/apps/web/tests/scaffold.ts
@@ -516,6 +516,7 @@ function normalizeAria(snapshot: string, workspaceCwd: string): string {
     // shape so goldens stay stable across midnight and year boundaries.
     .replace(/\d{4}年\d{1,2}月\d{1,2}日 \d{2}:\d{2}/g, '{{clock}}')
     .replace(/\d{1,2}月\d{1,2}日 \d{2}:\d{2}/g, '{{clock}}')
+    .replace(/(?<!\d)\d{1,2}:\d{2}:\d{2}(?:\.\d+)?(?:\s*[AP]M)?(?!\d)/gi, '{{clock}}')
     .replace(/(?<!\d)\d{2}:\d{2}(?!\d)/g, '{{clock}}')
 }
 
diff --git a/apps/web/tests/snapshots/navigation-panes/trajectory.expected.md b/apps/web/tests/snapshots/navigation-panes/trajectory.expected.md
index 704190b9f2..3572409fc0 100644
--- a/apps/web/tests/snapshots/navigation-panes/trajectory.expected.md
+++ b/apps/web/tests/snapshots/navigation-panes/trajectory.expected.md
@@ -5,7 +5,7 @@
   - img
   - searchbox "Search trajectory"
 - region "Trajectory timeline":
-  - tooltip "ASSISTANT {{clock}}:40.549 AM → {{clock}}:42.091 AM Total 1.5 s · TTFT 368 ms · Decoding 1.2 s"
+  - tooltip "ASSISTANT {{clock}} → {{clock}} Total 1.5 s · TTFT 368 ms · Decoding 1.2 s"
 - table:
   - rowgroup:
     - row "SYSTEM, Initial System Prompt":