diff --git a/src/components/CellWithPopover/CellWithPopover.scss b/src/components/CellWithPopover/CellWithPopover.scss
index 6c0c428a7..aac328a2a 100644
--- a/src/components/CellWithPopover/CellWithPopover.scss
+++ b/src/components/CellWithPopover/CellWithPopover.scss
@@ -1,8 +1,12 @@
 .ydb-cell-with-popover {
-    display: flex;
+    display: inline-flex;
 
     max-width: 100%;
 
+    &_full-width {
+        display: flex;
+    }
+
     &__popover {
         display: inline-block;
         overflow: hidden;
diff --git a/src/components/CellWithPopover/CellWithPopover.tsx b/src/components/CellWithPopover/CellWithPopover.tsx
index a2daa0a57..3714cee09 100644
--- a/src/components/CellWithPopover/CellWithPopover.tsx
+++ b/src/components/CellWithPopover/CellWithPopover.tsx
@@ -22,7 +22,7 @@ export function CellWithPopover({
     ...props
 }: CellWithPopoverProps) {
     return (
-        <div className={b({fullWidth}, wrapperClassName)}>
+        <div className={b({'full-width': fullWidth}, wrapperClassName)}>
             <Popover
                 delayClosing={DELAY_TIMEOUT}
                 delayOpening={DELAY_TIMEOUT}
diff --git a/src/components/FullNodeViewer/FullNodeViewer.tsx b/src/components/FullNodeViewer/FullNodeViewer.tsx
index 9ff0e0959..ae8d3a07f 100644
--- a/src/components/FullNodeViewer/FullNodeViewer.tsx
+++ b/src/components/FullNodeViewer/FullNodeViewer.tsx
@@ -5,6 +5,7 @@ import {InfoViewer} from '../InfoViewer/InfoViewer';
 import type {InfoViewerItem} from '../InfoViewer/InfoViewer';
 import {PoolUsage} from '../PoolUsage/PoolUsage';
 import {ProgressViewer} from '../ProgressViewer/ProgressViewer';
+import {NodeUptime} from '../UptimeViewer/UptimeViewer';
 
 import './FullNodeViewer.scss';
 
@@ -30,7 +31,10 @@ export const FullNodeViewer = ({node, className}: FullNodeViewerProps) => {
 
     commonInfo.push(
         {label: 'Version', value: node?.Version},
-        {label: 'Uptime', value: node?.Uptime},
+        {
+            label: 'Uptime',
+            value: <NodeUptime StartTime={node?.StartTime} DisconnectTime={node?.DisconnectTime} />,
+        },
         {label: 'DC', value: node?.DataCenterDescription || node?.DC},
         {label: 'Rack', value: node?.Rack},
     );
diff --git a/src/components/TooltipsContent/TabletTooltipContent/TabletTooltipContent.tsx b/src/components/TooltipsContent/TabletTooltipContent/TabletTooltipContent.tsx
index d01c80d89..337de45ae 100644
--- a/src/components/TooltipsContent/TabletTooltipContent/TabletTooltipContent.tsx
+++ b/src/components/TooltipsContent/TabletTooltipContent/TabletTooltipContent.tsx
@@ -1,10 +1,12 @@
 import type {TTabletStateInfo} from '../../../types/api/tablet';
-import {getUptimeFromDateFormatted} from '../../../utils/dataFormatters/dataFormatters';
 import {InfoViewer, createInfoFormatter, formatObject} from '../../InfoViewer';
+import {TabletUptime} from '../../UptimeViewer/UptimeViewer';
 
 const formatTablet = createInfoFormatter<TTabletStateInfo>({
     values: {
-        ChangeTime: (value) => getUptimeFromDateFormatted(value),
+        ChangeTime: (value) => {
+            return <TabletUptime ChangeTime={value} />;
+        },
     },
     labels: {
         TabletId: 'Tablet',
diff --git a/src/components/UptimeViewer/UptimeViewer.tsx b/src/components/UptimeViewer/UptimeViewer.tsx
new file mode 100644
index 000000000..bb6927cb1
--- /dev/null
+++ b/src/components/UptimeViewer/UptimeViewer.tsx
@@ -0,0 +1,79 @@
+import {DefinitionList} from '@gravity-ui/uikit';
+
+import {EMPTY_DATA_PLACEHOLDER} from '../../utils/constants';
+import {
+    formatDateTime,
+    getDowntimeFromDateFormatted,
+    getUptimeFromDateFormatted,
+} from '../../utils/dataFormatters/dataFormatters';
+import {CellWithPopover} from '../CellWithPopover/CellWithPopover';
+
+import i18n from './i18n';
+
+interface NodeUptimeProps {
+    StartTime?: string;
+    DisconnectTime?: string;
+}
+
+export function NodeUptime({StartTime, DisconnectTime}: NodeUptimeProps) {
+    let uptime: string | undefined;
+
+    if (DisconnectTime) {
+        uptime = getDowntimeFromDateFormatted(DisconnectTime);
+    } else {
+        uptime = getUptimeFromDateFormatted(StartTime);
+    }
+
+    if (!uptime) {
+        return EMPTY_DATA_PLACEHOLDER;
+    }
+    return (
+        <CellWithPopover
+            placement={['top', 'auto']}
+            inline
+            content={
+                <DefinitionList responsive>
+                    {StartTime ? (
+                        <DefinitionList.Item key={'StartTime'} name={i18n('start-time')}>
+                            {formatDateTime(StartTime, {withTimeZone: true})}
+                        </DefinitionList.Item>
+                    ) : null}
+                    {DisconnectTime ? (
+                        <DefinitionList.Item key={'DisconnectTime'} name={i18n('disconnect-time')}>
+                            {formatDateTime(DisconnectTime, {withTimeZone: true})}
+                        </DefinitionList.Item>
+                    ) : null}
+                </DefinitionList>
+            }
+        >
+            {uptime}
+        </CellWithPopover>
+    );
+}
+
+interface TabletUptimeProps {
+    ChangeTime?: string;
+}
+
+export function TabletUptime({ChangeTime}: TabletUptimeProps) {
+    const uptime = getUptimeFromDateFormatted(ChangeTime);
+
+    if (!uptime) {
+        return EMPTY_DATA_PLACEHOLDER;
+    }
+    return (
+        <CellWithPopover
+            placement={['top', 'auto']}
+            inline
+            content={
+                <DefinitionList responsive>
+                    <DefinitionList.Item key={'changeTime'} name={i18n('change-time')}>
+                        {formatDateTime(ChangeTime, {withTimeZone: true})}
+                    </DefinitionList.Item>
+                </DefinitionList>
+            }
+        >
+            {uptime}
+        </CellWithPopover>
+    );
+}
diff --git a/src/components/UptimeViewer/i18n/en.json b/src/components/UptimeViewer/i18n/en.json
new file mode 100644
index 000000000..928702208
--- /dev/null
+++ b/src/components/UptimeViewer/i18n/en.json
@@ -0,0 +1,5 @@
+{
+  "start-time": "Start time",
+  "disconnect-time": "Disconnect time",
+  "change-time": "Change time"
+}
diff --git a/src/components/UptimeViewer/i18n/index.ts b/src/components/UptimeViewer/i18n/index.ts
new file mode 100644
index 000000000..d7a125339
--- /dev/null
+++ b/src/components/UptimeViewer/i18n/index.ts
@@ -0,0 +1,7 @@
+import {registerKeysets} from '../../../utils/i18n';
+
+import en from './en.json';
+
+const COMPONENT = 'ydb-uptime-viewer';
+
+export default registerKeysets(COMPONENT, {en});
diff --git a/src/components/nodesColumns/columns.tsx b/src/components/nodesColumns/columns.tsx
index 4803b049a..5c64f1301 100644
--- a/src/components/nodesColumns/columns.tsx
+++ b/src/components/nodesColumns/columns.tsx
@@ -23,6 +23,7 @@ import {PoolsGraph} from '../PoolsGraph/PoolsGraph';
 import {ProgressViewer} from '../ProgressViewer/ProgressViewer';
 import {TabletsStatistic} from '../TabletsStatistic';
 import {formatPool} from '../TooltipsContent';
+import {NodeUptime} from '../UptimeViewer/UptimeViewer';
 import {UsageLabel} from '../UsageLabel/UsageLabel';
 
 import {NODES_COLUMNS_IDS, NODES_COLUMNS_TITLES} from './constants';
@@ -103,12 +104,16 @@ export function getVersionColumn<T extends {Version?: string}>(): Column<T> {
         },
     };
 }
-export function getUptimeColumn<T extends {StartTime?: string; Uptime?: string}>(): Column<T> {
+export function getUptimeColumn<
+    T extends {StartTime?: string; DisconnectTime?: string},
+>(): Column<T> {
     return {
         name: NODES_COLUMNS_IDS.Uptime,
         header: NODES_COLUMNS_TITLES.Uptime,
         sortAccessor: ({StartTime}) => (StartTime ? -StartTime : 0),
-        render: ({row}) => row.Uptime,
+        render: ({row}) => {
+            return <NodeUptime StartTime={row.StartTime} DisconnectTime={row.DisconnectTime} />;
+        },
         align: DataTable.RIGHT,
         width: 120,
     };
diff --git a/src/containers/Tablet/components/TabletInfo/TabletInfo.tsx b/src/containers/Tablet/components/TabletInfo/TabletInfo.tsx
index a18f449f4..c5bfdb841 100644
--- a/src/containers/Tablet/components/TabletInfo/TabletInfo.tsx
+++ b/src/containers/Tablet/components/TabletInfo/TabletInfo.tsx
@@ -5,12 +5,12 @@ import type {InfoViewerItem} from '../../../../components/InfoViewer';
 import {InfoViewer} from '../../../../components/InfoViewer';
 import {LinkWithIcon} from '../../../../components/LinkWithIcon/LinkWithIcon';
 import {TabletState} from '../../../../components/TabletState/TabletState';
+import {TabletUptime} from '../../../../components/UptimeViewer/UptimeViewer';
 import {getTabletPagePath} from '../../../../routes';
 import {selectIsUserAllowedToMakeChanges} from '../../../../store/reducers/authentication/authentication';
 import {ETabletState} from '../../../../types/api/tablet';
 import type {TTabletStateInfo} from '../../../../types/api/tablet';
 import {cn} from '../../../../utils/cn';
-import {getUptimeFromDateFormatted} from '../../../../utils/dataFormatters/dataFormatters';
 import {createTabletDeveloperUIHref} from '../../../../utils/developerUI/developerUI';
 import {useTypedSelector} from '../../../../utils/hooks';
 import {getDefaultNodePath} from '../../../Node/NodePages';
@@ -72,7 +72,7 @@ export const TabletInfo = ({tablet}: TabletInfoProps) => {
     if (hasUptime) {
         tabletInfo.push({
             label: tabletInfoKeyset('field_uptime'),
-            value: getUptimeFromDateFormatted(ChangeTime),
+            value: <TabletUptime ChangeTime={ChangeTime} />,
         });
     }
 
diff --git a/src/containers/Tablet/components/TabletTable/TabletTable.tsx b/src/containers/Tablet/components/TabletTable/TabletTable.tsx
index ebe4b5132..d63b51c7b 100644
--- a/src/containers/Tablet/components/TabletTable/TabletTable.tsx
+++ b/src/containers/Tablet/components/TabletTable/TabletTable.tsx
@@ -5,8 +5,8 @@ import {EntityStatus} from '../../../../components/EntityStatus/EntityStatus';
 import {InternalLink} from '../../../../components/InternalLink/InternalLink';
 import {ResizeableDataTable} from '../../../../components/ResizeableDataTable/ResizeableDataTable';
 import {TabletState} from '../../../../components/TabletState/TabletState';
+import {TabletUptime} from '../../../../components/UptimeViewer/UptimeViewer';
 import type {ITabletPreparedHistoryItem} from '../../../../types/store/tablet';
-import {getUptimeFromDateFormatted} from '../../../../utils/dataFormatters/dataFormatters';
 import {getDefaultNodePath} from '../../../Node/NodePages';
 
 const TABLET_COLUMNS_WIDTH_LS_KEY = 'tabletTableColumnsWidth';
@@ -21,7 +21,10 @@ const columns: Column<ITabletPreparedHistoryItem>[] = [
         name: 'Change time',
         align: DataTable.RIGHT,
         sortable: false,
-        render: ({row}) => getUptimeFromDateFormatted(row.changeTime),
+        render: ({row}) => {
+            return <TabletUptime ChangeTime={row.changeTime} />;
+        },
+        width: 120,
     },
     {
         name: 'State',
diff --git a/src/containers/Tablets/TabletsTable.tsx b/src/containers/Tablets/TabletsTable.tsx
index c97f3df29..6ac88fb2a 100644
--- a/src/containers/Tablets/TabletsTable.tsx
+++ b/src/containers/Tablets/TabletsTable.tsx
@@ -9,12 +9,12 @@ import {ResizeableDataTable} from '../../components/ResizeableDataTable/Resizeab
 import {TableSkeleton} from '../../components/TableSkeleton/TableSkeleton';
 import {TabletNameWrapper} from '../../components/TabletNameWrapper/TabletNameWrapper';
 import {TabletState} from '../../components/TabletState/TabletState';
+import {TabletUptime} from '../../components/UptimeViewer/UptimeViewer';
 import {selectIsUserAllowedToMakeChanges} from '../../store/reducers/authentication/authentication';
 import {tabletApi} from '../../store/reducers/tablet';
 import {ETabletState} from '../../types/api/tablet';
 import type {TTabletStateInfo} from '../../types/api/tablet';
 import {DEFAULT_TABLE_SETTINGS, EMPTY_DATA_PLACEHOLDER} from '../../utils/constants';
-import {getUptimeFromDateFormatted} from '../../utils/dataFormatters/dataFormatters';
 import {useTypedSelector} from '../../utils/hooks';
 import {getDefaultNodePath} from '../Node/NodePages';
 
@@ -97,10 +97,11 @@ function getColumns({database}: {database?: string}) {
                 return i18n('Uptime');
             },
             render: ({row}) => {
-                return getUptimeFromDateFormatted(row.ChangeTime);
+                return <TabletUptime ChangeTime={row.ChangeTime} />;
             },
             sortAccessor: (row) => -Number(row.ChangeTime),
             align: 'right',
+            width: 120,
         },
         {
             name: 'Actions',
diff --git a/src/utils/dataFormatters/__test__/formatUptime.test.ts b/src/utils/dataFormatters/__test__/formatUptime.test.ts
index 190dfa7e5..ca9f80211 100644
--- a/src/utils/dataFormatters/__test__/formatUptime.test.ts
+++ b/src/utils/dataFormatters/__test__/formatUptime.test.ts
@@ -1,4 +1,3 @@
-import {EMPTY_DATA_PLACEHOLDER} from '../../constants';
 import {UNBREAKABLE_GAP} from '../../utils';
 import {
     formatUptimeInSeconds,
@@ -65,6 +64,6 @@ describe('formatUptimeInSeconds', () => {
         );
     });
     it('should return empty placeholder on NaN', () => {
-        expect(formatUptimeInSeconds(Number.NaN)).toBe(EMPTY_DATA_PLACEHOLDER);
+        expect(formatUptimeInSeconds(Number.NaN)).toBe(undefined);
     });
 });
diff --git a/src/utils/dataFormatters/dataFormatters.ts b/src/utils/dataFormatters/dataFormatters.ts
index a1851ee9a..ceae86709 100644
--- a/src/utils/dataFormatters/dataFormatters.ts
+++ b/src/utils/dataFormatters/dataFormatters.ts
@@ -6,7 +6,7 @@ import {
     getSizeWithSignificantDigits,
 } from '../bytesParsers/formatBytes';
 import type {BytesSizes} from '../bytesParsers/formatBytes';
-import {EMPTY_DATA_PLACEHOLDER, HOUR_IN_SECONDS} from '../constants';
+import {HOUR_IN_SECONDS} from '../constants';
 import {configuredNumeral} from '../numeral';
 import {UNBREAKABLE_GAP, isNumeric} from '../utils';
 
@@ -46,7 +46,7 @@ export const stringifyVdiskId = (id?: TVDiskID | TVSlotId) => {
  */
 export function formatUptimeInSeconds(seconds: number) {
     if (!isNumeric(seconds)) {
-        return EMPTY_DATA_PLACEHOLDER;
+        return undefined;
     }
 
     // duration.format() doesn't work well with negative values
@@ -214,8 +214,12 @@ export const formatCPUWithLabel = (value?: number) => {
     return `${localizedCores} ${i18n('format-cpu.cores', {count: cores})}`;
 };
 
-export const formatDateTime = (value?: number | string, defaultValue = '') => {
-    const formattedData = dateTimeParse(Number(value))?.format('YYYY-MM-DD HH:mm');
+export const formatDateTime = (
+    value?: number | string,
+    {withTimeZone, defaultValue = ''}: {withTimeZone?: boolean; defaultValue?: string} = {},
+) => {
+    const tz = withTimeZone ? ' z' : '';
+    const formattedData = dateTimeParse(Number(value))?.format(`YYYY-MM-DD HH:mm${tz}`);
 
     return formattedData ?? defaultValue;
 };
diff --git a/src/utils/nodes.ts b/src/utils/nodes.ts
index 631313543..db827bae4 100644
--- a/src/utils/nodes.ts
+++ b/src/utils/nodes.ts
@@ -8,10 +8,6 @@ import type {TNodeInfo} from '../types/api/nodesList';
 import type {NodeHostsMap} from '../types/store/nodesList';
 
 import {HOUR_IN_SECONDS} from './constants';
-import {
-    getDowntimeFromDateFormatted,
-    getUptimeFromDateFormatted,
-} from './dataFormatters/dataFormatters';
 
 import {valueIsDefined} from '.';
 
@@ -60,7 +56,6 @@ export interface PreparedNodeSystemState extends TSystemStateInfo {
     Rack?: string;
     DC?: string;
     LoadAveragePercents?: number[];
-    Uptime: string;
     TenantName?: string;
     SharedCacheLimit?: number;
     SharedCacheUsed?: number;
@@ -74,14 +69,6 @@ export function prepareNodeSystemState(
     const DC = systemState.Location?.DataCenter || systemState.DataCenter;
     const TenantName = systemState?.Tenants?.[0];
 
-    let Uptime: PreparedNodeSystemState['Uptime'];
-
-    if (systemState.DisconnectTime) {
-        Uptime = getDowntimeFromDateFormatted(systemState.DisconnectTime);
-    } else {
-        Uptime = getUptimeFromDateFormatted(systemState.StartTime);
-    }
-
     const LoadAveragePercents = calculateLoadAveragePercents(systemState);
 
     // 0 limit means that limit is not set, so it should be undefined
@@ -94,7 +81,6 @@ export function prepareNodeSystemState(
         ...systemState,
         Rack,
         DC,
-        Uptime,
         LoadAveragePercents,
         TenantName,
         SharedCacheLimit,