diff --git a/packages/trace-viewer/src/ui/callTab.tsx b/packages/trace-viewer/src/ui/callTab.tsx
index 1ab3b5b46f4b9..1c78920f86e0f 100644
--- a/packages/trace-viewer/src/ui/callTab.tsx
+++ b/packages/trace-viewer/src/ui/callTab.tsx
@@ -27,50 +27,63 @@ import type { ActionTraceEventInContext } from './modelUtil';
 
 export const CallTab: React.FunctionComponent<{
   action: ActionTraceEventInContext | undefined,
+  startTimeOffset: number,
   sdkLanguage: Language | undefined,
-}> = ({ action, sdkLanguage }) => {
+}> = ({ action, startTimeOffset, sdkLanguage }) => {
+  // We never need the waitForEventInfo (`info`).
+  const paramKeys = React.useMemo(() => Object.keys(action?.params ?? {}).filter(name => name !== 'info'), [action]);
+
   if (!action)
     return <PlaceholderPanel text='No action selected' />;
-  const params = { ...action.params };
-  // Strip down the waitForEventInfo data, we never need it.
-  delete params.info;
-  const paramKeys = Object.keys(params);
-  const timeMillis = action.startTime + (action.context.wallTime - action.context.startTime);
-  const wallTime = new Date(timeMillis).toLocaleString();
+
+  // Calculate execution time relative to the test runner's start time
+  const startTimeMillis = action.startTime - startTimeOffset;
+  const startTime = msToString(startTimeMillis);
+
   const duration = action.endTime ? msToString(action.endTime - action.startTime) : 'Timed Out';
 
-  return <div className='call-tab'>
-    <div className='call-line'>{action.apiName}</div>
-    {<>
-      <div className='call-section'>Time</div>
-      {wallTime && <div className='call-line'>wall time:<span className='call-value datetime' title={wallTime}>{wallTime}</span></div>}
-      <div className='call-line'>duration:<span className='call-value datetime' title={duration}>{duration}</span></div>
-    </>}
-    { !!paramKeys.length && <div className='call-section'>Parameters</div> }
-    {
-      !!paramKeys.length && paramKeys.map((name, index) => renderProperty(propertyToString(action, name, params[name], sdkLanguage), 'param-' + index))
-    }
-    { !!action.result && <div className='call-section'>Return value</div> }
-    {
-      !!action.result && Object.keys(action.result).map((name, index) =>
-        renderProperty(propertyToString(action, name, action.result[name], sdkLanguage), 'result-' + index)
-      )
-    }
-  </div>;
+  return (
+    <div className='call-tab'>
+      <div className='call-line'>{action.apiName}</div>
+      {
+        <>
+          <div className='call-section'>Time</div>
+          <DateTimeCallLine name='start:' value={startTime} />
+          <DateTimeCallLine name='duration:' value={duration} />
+        </>
+      }
+      {
+        !!paramKeys.length && <>
+          <div className='call-section'>Parameters</div>
+          {paramKeys.map(name => renderProperty(propertyToString(action, name, action.params[name], sdkLanguage)))}
+        </>
+      }
+      {
+        !!action.result && <>
+          <div className='call-section'>Return value</div>
+          {Object.keys(action.result).map(name =>
+            renderProperty(propertyToString(action, name, action.result[name], sdkLanguage))
+          )}
+        </>
+      }
+    </div>
+  );
 };
 
+const DateTimeCallLine: React.FC<{ name: string, value: string }> = ({ name, value }) => <div className='call-line'>{name}<span className='call-value datetime' title={value}>{value}</span></div>;
+
 type Property = {
   name: string;
   type: 'string' | 'number' | 'object' | 'locator' | 'handle' | 'bigint' | 'boolean' | 'symbol' | 'undefined' | 'function';
   text: string;
 };
 
-function renderProperty(property: Property, key: string) {
+function renderProperty(property: Property) {
   let text = property.text.replace(/\n/g, '↵');
   if (property.type === 'string')
     text = `"${text}"`;
   return (
-    <div key={key} className='call-line'>
+    <div key={property.name} className='call-line'>
       {property.name}:<span className={clsx('call-value', property.type)} title={property.text}>{text}</span>
       { ['string', 'number', 'object', 'locator'].includes(property.type) &&
         <CopyToClipboard value={property.text} />
diff --git a/packages/trace-viewer/src/ui/metadataView.tsx b/packages/trace-viewer/src/ui/metadataView.tsx
index c1802a4b4d78c..88c2e2bf933fd 100644
--- a/packages/trace-viewer/src/ui/metadataView.tsx
+++ b/packages/trace-viewer/src/ui/metadataView.tsx
@@ -25,9 +25,11 @@ export const MetadataView: React.FunctionComponent<{
   if (!model)
     return <></>;
 
+  const wallTime = model.wallTime !== undefined ? new Date(model.wallTime).toLocaleString(undefined, { timeZoneName: 'short' }) : undefined;
+
   return <div data-testid='metadata-view' className='vbox' style={{ flexShrink: 0 }}>
     <div className='call-section' style={{ paddingTop: 2 }}>Time</div>
-    {!!model.wallTime && <div className='call-line'>start time:<span className='call-value datetime' title={new Date(model.wallTime).toLocaleString()}>{new Date(model.wallTime).toLocaleString()}</span></div>}
+    {!!wallTime && <div className='call-line'>start time:<span className='call-value datetime' title={wallTime}>{wallTime}</span></div>}
     <div className='call-line'>duration:<span className='call-value number' title={msToString(model.endTime - model.startTime)}>{msToString(model.endTime - model.startTime)}</span></div>
     <div className='call-section'>Browser</div>
     <div className='call-line'>engine:<span className='call-value string' title={model.browserName}>{model.browserName}</span></div>
diff --git a/packages/trace-viewer/src/ui/networkResourceDetails.tsx b/packages/trace-viewer/src/ui/networkResourceDetails.tsx
index 0c4af4e969b1c..aaa78d17860a0 100644
--- a/packages/trace-viewer/src/ui/networkResourceDetails.tsx
+++ b/packages/trace-viewer/src/ui/networkResourceDetails.tsx
@@ -24,12 +24,14 @@ import { generateCurlCommand, generateFetchCall } from '../third_party/devtools'
 import { CopyToClipboardTextButton } from './copyToClipboard';
 import { getAPIRequestCodeGen } from './codegen';
 import type { Language } from '@isomorphic/locatorGenerators';
+import { msToString } from '@web/uiUtils';
 
 export const NetworkResourceDetails: React.FunctionComponent<{
   resource: ResourceSnapshot;
-  onClose: () => void;
   sdkLanguage: Language;
-}> = ({ resource, onClose, sdkLanguage }) => {
+  startTimeOffset: number;
+  onClose: () => void;
+}> = ({ resource, sdkLanguage, startTimeOffset, onClose }) => {
   const [selectedTab, setSelectedTab] = React.useState('request');
 
   return <TabbedPane
@@ -39,7 +41,7 @@ export const NetworkResourceDetails: React.FunctionComponent<{
       {
         id: 'request',
         title: 'Request',
-        render: () => <RequestTab resource={resource} sdkLanguage={sdkLanguage} />,
+        render: () => <RequestTab resource={resource} sdkLanguage={sdkLanguage} startTimeOffset={startTimeOffset} />,
       },
       {
         id: 'response',
@@ -59,7 +61,8 @@ export const NetworkResourceDetails: React.FunctionComponent<{
 const RequestTab: React.FunctionComponent<{
   resource: ResourceSnapshot;
   sdkLanguage: Language;
-}> = ({ resource, sdkLanguage }) => {
+  startTimeOffset: number;
+}> = ({ resource, sdkLanguage, startTimeOffset }) => {
   const [requestBody, setRequestBody] = React.useState<{ text: string, mimeType?: string } | null>(null);
 
   React.useEffect(() => {
@@ -96,6 +99,9 @@ const RequestTab: React.FunctionComponent<{
     </> : null}
     <div className='network-request-details-header'>Request Headers</div>
     <div className='network-request-details-headers'>{resource.request.headers.map(pair => `${pair.name}: ${pair.value}`).join('\n')}</div>
+    <div className='network-request-details-header'>Time</div>
+    <div className='network-request-details-general'>{`Start: ${msToString(startTimeOffset)}`}</div>
+    <div className='network-request-details-general'>{`Duration: ${msToString(resource.time)}`}</div>
 
     <div className='network-request-details-copy'>
       <CopyToClipboardTextButton description='Copy as cURL' value={() => generateCurlCommand(resource)} />
diff --git a/packages/trace-viewer/src/ui/networkTab.tsx b/packages/trace-viewer/src/ui/networkTab.tsx
index 56cf9325b479b..ceaafdcec52cf 100644
--- a/packages/trace-viewer/src/ui/networkTab.tsx
+++ b/packages/trace-viewer/src/ui/networkTab.tsx
@@ -117,7 +117,7 @@ export const NetworkTab: React.FunctionComponent<{
         sidebarIsFirst={true}
         orientation='horizontal'
         settingName='networkResourceDetails'
-        main={<NetworkResourceDetails resource={selectedEntry.resource} onClose={() => setSelectedEntry(undefined)} sdkLanguage={sdkLanguage} />}
+        main={<NetworkResourceDetails resource={selectedEntry.resource} sdkLanguage={sdkLanguage} startTimeOffset={selectedEntry.start} onClose={() => setSelectedEntry(undefined)} />}
         sidebar={grid}
       />}
   </>;
diff --git a/packages/trace-viewer/src/ui/workbench.tsx b/packages/trace-viewer/src/ui/workbench.tsx
index ad8a099ea4fde..7a14d495c69a6 100644
--- a/packages/trace-viewer/src/ui/workbench.tsx
+++ b/packages/trace-viewer/src/ui/workbench.tsx
@@ -176,7 +176,7 @@ export const Workbench: React.FunctionComponent<{
   const callTab: TabbedPaneTabModel = {
     id: 'call',
     title: 'Call',
-    render: () => <CallTab action={activeAction} sdkLanguage={sdkLanguage} />
+    render: () => <CallTab action={activeAction} startTimeOffset={model?.startTime ?? 0} sdkLanguage={sdkLanguage} />
   };
   const logTab: TabbedPaneTabModel = {
     id: 'log',
diff --git a/tests/library/trace-viewer.spec.ts b/tests/library/trace-viewer.spec.ts
index 3ffba28582d77..53c6bcf6c4497 100644
--- a/tests/library/trace-viewer.spec.ts
+++ b/tests/library/trace-viewer.spec.ts
@@ -240,7 +240,7 @@ test('should show params and return value', async ({ showTraceViewer }) => {
   await traceViewer.selectAction('page.evaluate');
   await expect(traceViewer.callLines).toHaveText([
     /page.evaluate/,
-    /wall time:[0-9/:,APM ]+/,
+    /start:[\d\.]+m?s/,
     /duration:[\d]+ms/,
     /expression:"\({↵    a↵  }\) => {↵    console\.log\(\'Info\'\);↵    console\.warn\(\'Warning\'\);↵    console/,
     'isFunction:true',
@@ -251,7 +251,7 @@ test('should show params and return value', async ({ showTraceViewer }) => {
   await traceViewer.selectAction(`locator('button')`);
   await expect(traceViewer.callLines).toContainText([
     /expect.toHaveText/,
-    /wall time:[0-9/:,APM ]+/,
+    /start:[\d\.]+m?s/,
     /duration:[\d]+ms/,
     /locator:locator\('button'\)/,
     /expression:"to.have.text"/,
@@ -266,7 +266,7 @@ test('should show null as a param', async ({ showTraceViewer, browserName }) =>
   await traceViewer.selectAction('page.evaluate', 1);
   await expect(traceViewer.callLines).toHaveText([
     /page.evaluate/,
-    /wall time:[0-9/:,APM ]+/,
+    /start:[\d\.]+m?s/,
     /duration:[\d]+ms/,
     'expression:"() => 1 + 1"',
     'isFunction:true',