diff --git a/app/src/components/widgets/singleLevelWidgets/charts/failedCasesTrendChart/config/utils.js b/app/src/components/widgets/singleLevelWidgets/charts/failedCasesTrendChart/config/utils.js
index 736af975ee..12aa6acdb1 100644
--- a/app/src/components/widgets/singleLevelWidgets/charts/failedCasesTrendChart/config/utils.js
+++ b/app/src/components/widgets/singleLevelWidgets/charts/failedCasesTrendChart/config/utils.js
@@ -47,7 +47,7 @@ export const calculateTooltipParams = (data, color, customProps) => {
 
   return {
     itemName: `${name} #${number}`,
-    startTime: Number(startTime),
+    startTime: new Date(startTime).getTime(),
     itemCases: `${value} ${formatMessage(messages.cases)}`,
     color: color(id),
     issueStatNameProps: { itemName: formatMessage(statusLocalization[FAILED]) },
diff --git a/app/src/components/widgets/singleLevelWidgets/charts/investigatedTrendChart/config/utils.js b/app/src/components/widgets/singleLevelWidgets/charts/investigatedTrendChart/config/utils.js
index bc6b473bc1..1cb39b905a 100644
--- a/app/src/components/widgets/singleLevelWidgets/charts/investigatedTrendChart/config/utils.js
+++ b/app/src/components/widgets/singleLevelWidgets/charts/investigatedTrendChart/config/utils.js
@@ -31,7 +31,7 @@ export const calculateTooltipParams = (data, color, customProps) => {
 
   return {
     itemName: isTimeline ? date : `${name} #${number}`,
-    startTime: isTimeline ? null : Number(startTime),
+    startTime: isTimeline ? null : new Date(startTime).getTime(),
     itemCases: `${Number(value).toFixed(2)}%`,
     color: color(id),
     issueStatNameProps: { itemName: messages[id] ? formatMessage(messages[id]) : id },
diff --git a/app/src/components/widgets/singleLevelWidgets/charts/launchStatisticsChart/config/utils.js b/app/src/components/widgets/singleLevelWidgets/charts/launchStatisticsChart/config/utils.js
index e32645b08a..3ad998c5cd 100644
--- a/app/src/components/widgets/singleLevelWidgets/charts/launchStatisticsChart/config/utils.js
+++ b/app/src/components/widgets/singleLevelWidgets/charts/launchStatisticsChart/config/utils.js
@@ -76,7 +76,7 @@ export const calculateTooltipParams = (data, color, customProps) => {
 
   return {
     itemName: isTimeline ? date : `${name} #${number}`,
-    startTime: isTimeline ? null : Number(startTime),
+    startTime: isTimeline ? null : new Date(startTime).getTime(),
     itemCases: `${value} ${formatMessage(messages.cases)}`,
     color: color(id),
     issueStatNameProps: { itemName: id, defectTypes, formatMessage },
diff --git a/app/src/components/widgets/singleLevelWidgets/charts/launchesComparisonChart/config/utils.js b/app/src/components/widgets/singleLevelWidgets/charts/launchesComparisonChart/config/utils.js
index ae3e39734e..4f72179add 100644
--- a/app/src/components/widgets/singleLevelWidgets/charts/launchesComparisonChart/config/utils.js
+++ b/app/src/components/widgets/singleLevelWidgets/charts/launchesComparisonChart/config/utils.js
@@ -21,7 +21,7 @@ export const calculateTooltipParams = (data, color, customProps) => {
 
   return {
     itemName: `${name} #${number}`,
-    startTime: Number(startTime),
+    startTime: new Date(startTime).getTime(),
     itemCases: `${value}%`,
     color: color(id),
     issueStatNameProps: { itemName: id, defectTypes, noTotal: true, formatMessage },
diff --git a/app/src/components/widgets/singleLevelWidgets/charts/nonPassedTestCasesTrendChart/config/utils.js b/app/src/components/widgets/singleLevelWidgets/charts/nonPassedTestCasesTrendChart/config/utils.js
index 49af120ffa..001463cce7 100644
--- a/app/src/components/widgets/singleLevelWidgets/charts/nonPassedTestCasesTrendChart/config/utils.js
+++ b/app/src/components/widgets/singleLevelWidgets/charts/nonPassedTestCasesTrendChart/config/utils.js
@@ -23,7 +23,7 @@ export const calculateTooltipParams = (data, color, customProps) => {
 
   return {
     itemName: `${name} #${number}`,
-    startTime: Number(startTime),
+    startTime: new Date(startTime).getTime(),
     itemCases: `${Number(value).toFixed(2)}%`,
     color: color(id),
     issueStatNameProps: { itemName: formatMessage(messages.failedSkippedTotal) },
diff --git a/app/src/components/widgets/singleLevelWidgets/charts/testCasesGrowthTrendChart/config/utils.js b/app/src/components/widgets/singleLevelWidgets/charts/testCasesGrowthTrendChart/config/utils.js
index e1ee1f75dd..18cc87d11e 100644
--- a/app/src/components/widgets/singleLevelWidgets/charts/testCasesGrowthTrendChart/config/utils.js
+++ b/app/src/components/widgets/singleLevelWidgets/charts/testCasesGrowthTrendChart/config/utils.js
@@ -50,7 +50,7 @@ export const calculateTooltipParams = (data, color, customProps) => {
 
   return {
     itemName: isTimeline ? date : `${name} #${number}`,
-    startTime: isTimeline ? '' : dateFormat(Number(startTime)),
+    startTime: isTimeline ? '' : dateFormat(new Date(startTime).getTime()),
     growth,
     growthClass,
     total,
diff --git a/app/src/components/widgets/singleLevelWidgets/tables/projectActivity/projectActivity.jsx b/app/src/components/widgets/singleLevelWidgets/tables/projectActivity/projectActivity.jsx
index 6c192c8b4e..3d1afeefa9 100644
--- a/app/src/components/widgets/singleLevelWidgets/tables/projectActivity/projectActivity.jsx
+++ b/app/src/components/widgets/singleLevelWidgets/tables/projectActivity/projectActivity.jsx
@@ -223,7 +223,7 @@ export class ProjectActivity extends Component {
               {ActivityComponent}
               <AbsRelTime
                 setStartTimeFormatAction={START_TIME_FORMAT_ABSOLUTE}
-                startTime={+activity.lastModified}
+                startTime={new Date(activity.lastModified).getTime()}
                 customClass={cx('time')}
               />
             </div>
diff --git a/app/src/pages/inside/common/itemInfo/itemInfo.jsx b/app/src/pages/inside/common/itemInfo/itemInfo.jsx
index 2b830ced08..f228e60624 100644
--- a/app/src/pages/inside/common/itemInfo/itemInfo.jsx
+++ b/app/src/pages/inside/common/itemInfo/itemInfo.jsx
@@ -147,6 +147,9 @@ export class ItemInfo extends Component {
       hideDescription,
     } = this.props;
 
+    const startTime = new Date(value.startTime).getTime();
+    const endTime = new Date(value.endTime).getTime();
+
     const autoAnalysisLabel = value.analysing?.find(
       (item) => item === ANALYZER_TYPES.AUTO_ANALYZER || item === ANALYZER_TYPES.CLUSTER_ANALYSER,
     );
@@ -213,23 +216,21 @@ export class ItemInfo extends Component {
                 withPreloader
               />
             ))}
-          {value.startTime && (
+          {!!startTime && (
             <span className={cx('duration-block')}>
               <DurationBlock
                 type={value.type}
                 status={value.status}
                 itemNumber={value.number}
                 timing={{
-                  start: value.startTime,
-                  end: value.endTime,
+                  start: startTime,
+                  end: endTime,
                   approxTime: value.approximateDuration,
                 }}
               />
             </span>
           )}
-          {value.startTime && (
-            <div className={cx('mobile-start-time')}>{fromNowFormat(value.startTime)}</div>
-          )}
+          {!!startTime && <div className={cx('mobile-start-time')}>{fromNowFormat(startTime)}</div>}
           {value.hasRetries && (
             <div className={cx('retry-icon')} title={intl.formatMessage(messages.retryTooltip)}>
               {Parser(RetryIcon)}