fix: make x axis and tooltip time format consistent in uPlot graphs (#6523)

This reverts commit 429c87a12f.

frontend/package.json

@@ -186,6 +186,7 @@
 		"@types/webpack-dev-server": "^4.7.2",
 		"@typescript-eslint/eslint-plugin": "^4.33.0",
 		"@typescript-eslint/parser": "^4.33.0",
+		"@vvo/tzdb": "6.149.0",
 		"autoprefixer": "10.4.19",
 		"babel-plugin-styled-components": "^1.12.0",
 		"compression-webpack-plugin": "9.0.0",

frontend/src/components/CustomTimePicker/CustomTimePicker.styles.scss

@@ -119,3 +119,42 @@
 		color: var(--bg-slate-400) !important;
 	}
 }
+
+.date-time-popover-footer {
+	border-top: 1px solid var(--bg-ink-200);
+	padding: 8px 14px;
+	.timezone-container {
+		&,
+		.timezone {
+			font-family: Inter;
+			font-size: 12px;
+			line-height: 16px;
+			letter-spacing: -0.06px;
+		}
+		display: flex;
+		align-items: center;
+		color: var(--bg-vanilla-400);
+		gap: 6px;
+		.timezone {
+			cursor: pointer;
+			padding: 0;
+			color: var(--bg-vanilla-100);
+			background-color: transparent;
+			border: none;
+		}
+	}
+}
+.timezone-badge {
+	display: flex;
+	align-items: center;
+	justify-content: center;
+	padding: 0 4px;
+	border-radius: 2px;
+	background: rgba(171, 189, 255, 0.04);
+	color: var(--bg-vanilla-100);
+	font-size: 12px;
+	font-weight: 400;
+	line-height: 16px;
+	letter-spacing: -0.06px;
+	cursor: pointer;
+}

frontend/src/components/CustomTimePicker/CustomTimePicker.tsx

@@ -15,11 +15,14 @@ import { isValidTimeFormat } from 'lib/getMinMax';
 import { defaultTo, isFunction, noop } from 'lodash-es';
 import debounce from 'lodash-es/debounce';
 import { CheckCircle, ChevronDown, Clock } from 'lucide-react';
+import { useTimezone } from 'providers/Timezone';
 import {
 	ChangeEvent,
 	Dispatch,
 	SetStateAction,
+	useCallback,
 	useEffect,
+	useMemo,
 	useState,
 } from 'react';
 import { useLocation } from 'react-router-dom';
@@ -28,6 +31,8 @@ import { popupContainer } from 'utils/selectPopupContainer';
 import CustomTimePickerPopoverContent from './CustomTimePickerPopoverContent';
 
 const maxAllowedMinTimeInMonths = 6;
+type ViewType = 'datetime' | 'timezone';
+const DEFAULT_VIEW: ViewType = 'datetime';
 
 interface CustomTimePickerProps {
 	onSelect: (value: string) => void;
@@ -81,6 +86,25 @@ function CustomTimePicker({
 	const location = useLocation();
 	const [isInputFocused, setIsInputFocused] = useState(false);
 
+	const [activeView, setActiveView] = useState<ViewType>(DEFAULT_VIEW);
+
+	const { timezone, browserTimezone } = useTimezone();
+	const activeTimezoneOffset = timezone?.offset;
+	const isTimezoneOverridden = useMemo(
+		() => timezone?.offset !== browserTimezone.offset,
+		[timezone, browserTimezone],
+	);
+
+	const handleViewChange = useCallback(
+		(newView: 'timezone' | 'datetime'): void => {
+			if (activeView !== newView) {
+				setActiveView(newView);
+			}
+			setOpen(!open);
+		},
+		[activeView, open, setOpen],
+	);
+
 	const getSelectedTimeRangeLabel = (
 		selectedTime: string,
 		selectedTimeValue: string,
@@ -132,6 +156,7 @@ function CustomTimePicker({
 		setOpen(newOpen);
 		if (!newOpen) {
 			setCustomDTPickerVisible?.(false);
+			setActiveView('datetime');
 		}
 	};
 
@@ -281,6 +306,8 @@ function CustomTimePicker({
 							handleGoLive={defaultTo(handleGoLive, noop)}
 							options={items}
 							selectedTime={selectedTime}
+							activeView={activeView}
+							setActiveView={setActiveView}
 						/>
 					) : (
 						content
@@ -317,12 +344,23 @@ function CustomTimePicker({
 						)
 					}
 					suffix={
-						<ChevronDown
-							size={14}
-							onClick={(): void => {
-								setOpen(!open);
-							}}
-						/>
+						<>
+							{!!isTimezoneOverridden && activeTimezoneOffset && (
+								<div
+									className="timezone-badge"
+									onClick={(e): void => {
+										e.stopPropagation();
+										handleViewChange('timezone');
+									}}
+								>
+									<span>{activeTimezoneOffset}</span>
+								</div>
+							)}
+							<ChevronDown
+								size={14}
+								onClick={(): void => handleViewChange('datetime')}
+							/>
+						</>
 					}
 				/>
 			</Popover>

frontend/src/components/CustomTimePicker/CustomTimePickerPopoverContent.tsx

@@ -1,5 +1,6 @@
 import './CustomTimePicker.styles.scss';
 
+import { Color } from '@signozhq/design-tokens';
 import { Button } from 'antd';
 import cx from 'classnames';
 import ROUTES from 'constants/routes';
@@ -9,10 +10,13 @@ import {
 	Option,
 	RelativeDurationSuggestionOptions,
 } from 'container/TopNav/DateTimeSelectionV2/config';
+import { Clock } from 'lucide-react';
+import { useTimezone } from 'providers/Timezone';
 import { Dispatch, SetStateAction, useMemo } from 'react';
 import { useLocation } from 'react-router-dom';
 
 import RangePickerModal from './RangePickerModal';
+import TimezonePicker from './TimezonePicker';
 
 interface CustomTimePickerPopoverContentProps {
 	options: any[];
@@ -26,8 +30,11 @@ interface CustomTimePickerPopoverContentProps {
 	onSelectHandler: (label: string, value: string) => void;
 	handleGoLive: () => void;
 	selectedTime: string;
+	activeView: 'datetime' | 'timezone';
+	setActiveView: Dispatch<SetStateAction<'datetime' | 'timezone'>>;
 }
 
+// eslint-disable-next-line sonarjs/cognitive-complexity
 function CustomTimePickerPopoverContent({
 	options,
 	setIsOpen,
@@ -37,12 +44,16 @@ function CustomTimePickerPopoverContent({
 	onSelectHandler,
 	handleGoLive,
 	selectedTime,
+	activeView,
+	setActiveView,
 }: CustomTimePickerPopoverContentProps): JSX.Element {
 	const { pathname } = useLocation();
 
 	const isLogsExplorerPage = useMemo(() => pathname === ROUTES.LOGS_EXPLORER, [
 		pathname,
 	]);
+	const { timezone } = useTimezone();
+	const activeTimezoneOffset = timezone?.offset;
 
 	function getTimeChips(options: Option[]): JSX.Element {
 		return (
@@ -63,55 +74,75 @@ function CustomTimePickerPopoverContent({
 		);
 	}
 
-	return (
-		<div className="date-time-popover">
-			<div className="date-time-options">
-				{isLogsExplorerPage && (
-					<Button className="data-time-live" type="text" onClick={handleGoLive}>
-						Live
-					</Button>
-				)}
-				{options.map((option) => (
-					<Button
-						type="text"
-						key={option.label + option.value}
-						onClick={(): void => {
-							onSelectHandler(option.label, option.value);
-						}}
-						className={cx(
-							'date-time-options-btn',
-							customDateTimeVisible
-								? option.value === 'custom' && 'active'
-								: selectedTime === option.value && 'active',
-						)}
+	return activeView === 'datetime' ? (
+		<div>
+			<div className="date-time-popover">
+				<div className="date-time-options">
+					{isLogsExplorerPage && (
+						<Button className="data-time-live" type="text" onClick={handleGoLive}>
+							Live
+						</Button>
+					)}
+					{options.map((option) => (
+						<Button
+							type="text"
+							key={option.label + option.value}
+							onClick={(): void => {
+								onSelectHandler(option.label, option.value);
+							}}
+							className={cx(
+								'date-time-options-btn',
+								customDateTimeVisible
+									? option.value === 'custom' && 'active'
+									: selectedTime === option.value && 'active',
+							)}
+						>
+							{option.label}
+						</Button>
+					))}
+				</div>
+				<div
+					className={cx(
+						'relative-date-time',
+						selectedTime === 'custom' || customDateTimeVisible
+							? 'date-picker'
+							: 'relative-times',
+					)}
+				>
+					{selectedTime === 'custom' || customDateTimeVisible ? (
+						<RangePickerModal
+							setCustomDTPickerVisible={setCustomDTPickerVisible}
+							setIsOpen={setIsOpen}
+							onCustomDateHandler={onCustomDateHandler}
+							selectedTime={selectedTime}
+						/>
+					) : (
+						<div className="relative-times-container">
+							<div className="time-heading">RELATIVE TIMES</div>
+							<div>{getTimeChips(RelativeDurationSuggestionOptions)}</div>
+						</div>
+					)}
+				</div>
+			</div>
+
+			<div className="date-time-popover-footer">
+				<div className="timezone-container">
+					<Clock color={Color.BG_VANILLA_400} height={12} width={12} />
+					<span className="timezone-text">You are at</span>
+					<button
+						type="button"
+						className="timezone"
+						onClick={(): void => setActiveView('timezone')}
 					>
-						{option.label}
-					</Button>
-				))}
-			</div>
-			<div
-				className={cx(
-					'relative-date-time',
-					selectedTime === 'custom' || customDateTimeVisible
-						? 'date-picker'
-						: 'relative-times',
-				)}
-			>
-				{selectedTime === 'custom' || customDateTimeVisible ? (
-					<RangePickerModal
-						setCustomDTPickerVisible={setCustomDTPickerVisible}
-						setIsOpen={setIsOpen}
-						onCustomDateHandler={onCustomDateHandler}
-						selectedTime={selectedTime}
-					/>
-				) : (
-					<div className="relative-times-container">
-						<div className="time-heading">RELATIVE TIMES</div>
-						<div>{getTimeChips(RelativeDurationSuggestionOptions)}</div>
-					</div>
-				)}
+						{activeTimezoneOffset}
+					</button>
+				</div>
 			</div>
 		</div>
+	) : (
+		<div className="date-time-popover">
+			<TimezonePicker setActiveView={setActiveView} setIsOpen={setIsOpen} />
+		</div>
 	);
 }
 

frontend/src/components/CustomTimePicker/RangePickerModal.tsx

@@ -4,6 +4,7 @@ import { DatePicker } from 'antd';
 import { DateTimeRangeType } from 'container/TopNav/CustomDateTimeModal';
 import { LexicalContext } from 'container/TopNav/DateTimeSelectionV2/config';
 import dayjs, { Dayjs } from 'dayjs';
+import { useTimezone } from 'providers/Timezone';
 import { Dispatch, SetStateAction } from 'react';
 import { useSelector } from 'react-redux';
 import { AppState } from 'store/reducers';
@@ -49,6 +50,8 @@ function RangePickerModal(props: RangePickerModalProps): JSX.Element {
 		}
 		onCustomDateHandler(date_time, LexicalContext.CUSTOM_DATE_PICKER);
 	};
+
+	const { timezone } = useTimezone();
 	return (
 		<div className="custom-date-picker">
 			<RangePicker
@@ -58,7 +61,10 @@ function RangePickerModal(props: RangePickerModalProps): JSX.Element {
 				onOk={onModalOkHandler}
 				// eslint-disable-next-line react/jsx-props-no-spreading
 				{...(selectedTime === 'custom' && {
-					defaultValue: [dayjs(minTime / 1000000), dayjs(maxTime / 1000000)],
+					defaultValue: [
+						dayjs(minTime / 1000000).tz(timezone.value),
+						dayjs(maxTime / 1000000).tz(timezone.value),
+					],
 				})}
 			/>
 		</div>

frontend/src/components/CustomTimePicker/TimezonePicker.styles.scss

@@ -0,0 +1,125 @@
+// Variables
+$font-family: 'Inter';
+$border-color: var(--bg-slate-400);
+$item-spacing: 8px;
+
+// Mixins
+@mixin text-style-base {
+	font-family: $font-family;
+	font-style: normal;
+	font-weight: 400;
+}
+
+@mixin flex-center {
+	display: flex;
+	align-items: center;
+}
+
+.timezone-picker {
+	width: 532px;
+	color: var(--bg-vanilla-400);
+	font-family: $font-family;
+
+	&__search {
+		@include flex-center;
+		justify-content: space-between;
+		padding: 12px 14px;
+		border-bottom: 1px solid $border-color;
+	}
+
+	&__input-container {
+		@include flex-center;
+		gap: 6px;
+		width: -webkit-fill-available;
+	}
+
+	&__input {
+		@include text-style-base;
+		width: 100%;
+		background: transparent;
+		border: none;
+		outline: none;
+		color: var(--bg-vanilla-100);
+		font-size: 14px;
+		line-height: 20px;
+		letter-spacing: -0.07px;
+		padding: 0;
+
+		&::placeholder {
+			color: var(--bg-vanilla-400);
+		}
+	}
+
+	&__esc-key {
+		@include text-style-base;
+		font-size: 8px;
+		color: var(--bg-vanilla-400);
+		letter-spacing: -0.04px;
+		border-radius: 2.286px;
+		border: 1.143px solid var(--bg-ink-200);
+		border-bottom-width: 2.286px;
+		background: var(--bg-ink-400);
+		padding: 0 1px;
+	}
+
+	&__list {
+		max-height: 310px;
+		overflow-y: auto;
+	}
+
+	&__item {
+		@include flex-center;
+		justify-content: space-between;
+		padding: 7.5px 6px 7.5px $item-spacing;
+		margin: 4px $item-spacing;
+		cursor: pointer;
+		background: transparent;
+		border: none;
+		width: -webkit-fill-available;
+		color: var(--bg-vanilla-400);
+		font-family: $font-family;
+
+		&:hover,
+		&.selected {
+			border-radius: 2px;
+			background: rgba(171, 189, 255, 0.04);
+			color: var(--bg-vanilla-100);
+		}
+
+		&.has-divider {
+			position: relative;
+			&::after {
+				content: '';
+				position: absolute;
+				bottom: -2px;
+				left: -$item-spacing;
+				right: -$item-spacing;
+				border-bottom: 1px solid $border-color;
+			}
+		}
+	}
+
+	&__name {
+		@include text-style-base;
+		font-size: 14px;
+		line-height: 20px;
+		letter-spacing: -0.07px;
+	}
+
+	&__offset {
+		color: var(--bg-vanilla-100);
+		font-size: 12px;
+		line-height: 16px;
+		letter-spacing: -0.06px;
+	}
+}
+
+.timezone-name-wrapper {
+	@include flex-center;
+	gap: 6px;
+
+	&__selected-icon {
+		height: 15px;
+		width: 15px;
+	}
+}

frontend/src/components/CustomTimePicker/TimezonePicker.tsx

@@ -0,0 +1,156 @@
+import './TimezonePicker.styles.scss';
+
+import { Color } from '@signozhq/design-tokens';
+import cx from 'classnames';
+import { TimezonePickerShortcuts } from 'constants/shortcuts/TimezonePickerShortcuts';
+import { useKeyboardHotkeys } from 'hooks/hotkeys/useKeyboardHotkeys';
+import { Check, Search } from 'lucide-react';
+import { useTimezone } from 'providers/Timezone';
+import {
+	Dispatch,
+	SetStateAction,
+	useCallback,
+	useEffect,
+	useState,
+} from 'react';
+
+import { Timezone, TIMEZONE_DATA } from './timezoneUtils';
+
+interface SearchBarProps {
+	value: string;
+	onChange: (value: string) => void;
+}
+
+interface TimezoneItemProps {
+	timezone: Timezone;
+	isSelected?: boolean;
+	onClick?: () => void;
+}
+
+const ICON_SIZE = 14;
+
+function SearchBar({ value, onChange }: SearchBarProps): JSX.Element {
+	return (
+		<div className="timezone-picker__search">
+			<div className="timezone-picker__input-container">
+				<Search color={Color.BG_VANILLA_400} height={ICON_SIZE} width={ICON_SIZE} />
+				<input
+					type="text"
+					className="timezone-picker__input"
+					placeholder="Search timezones..."
+					value={value}
+					onChange={(e): void => onChange(e.target.value)}
+				/>
+			</div>
+			<kbd className="timezone-picker__esc-key">esc</kbd>
+		</div>
+	);
+}
+
+function TimezoneItem({
+	timezone,
+	isSelected = false,
+	onClick,
+}: TimezoneItemProps): JSX.Element {
+	return (
+		<button
+			type="button"
+			className={cx('timezone-picker__item', {
+				selected: isSelected,
+				'has-divider': timezone.hasDivider,
+			})}
+			onClick={onClick}
+		>
+			<div className="timezone-name-wrapper">
+				<div className="timezone-name-wrapper__selected-icon">
+					{isSelected && (
+						<Check
+							color={Color.BG_VANILLA_100}
+							height={ICON_SIZE}
+							width={ICON_SIZE}
+						/>
+					)}
+				</div>
+				<div className="timezone-picker__name">{timezone.name}</div>
+			</div>
+			<div className="timezone-picker__offset">{timezone.offset}</div>
+		</button>
+	);
+}
+
+TimezoneItem.defaultProps = {
+	isSelected: false,
+	onClick: undefined,
+};
+
+interface TimezonePickerProps {
+	setActiveView: Dispatch<SetStateAction<'datetime' | 'timezone'>>;
+	setIsOpen: Dispatch<SetStateAction<boolean>>;
+}
+
+function TimezonePicker({
+	setActiveView,
+	setIsOpen,
+}: TimezonePickerProps): JSX.Element {
+	const [searchTerm, setSearchTerm] = useState('');
+	const { timezone, updateTimezone } = useTimezone();
+	const [selectedTimezone, setSelectedTimezone] = useState<string>(
+		timezone?.name ?? TIMEZONE_DATA[0].name,
+	);
+
+	const getFilteredTimezones = useCallback((searchTerm: string): Timezone[] => {
+		const normalizedSearch = searchTerm.toLowerCase();
+		return TIMEZONE_DATA.filter(
+			(tz) =>
+				tz.name.toLowerCase().includes(normalizedSearch) ||
+				tz.offset.toLowerCase().includes(normalizedSearch) ||
+				tz.searchIndex.toLowerCase().includes(normalizedSearch),
+		);
+	}, []);
+
+	const handleCloseTimezonePicker = useCallback(() => {
+		setActiveView('datetime');
+	}, [setActiveView]);
+
+	const handleTimezoneSelect = useCallback(
+		(timezone: Timezone) => {
+			setSelectedTimezone(timezone.name);
+			updateTimezone(timezone);
+			handleCloseTimezonePicker();
+			setIsOpen(false);
+		},
+		[handleCloseTimezonePicker, setIsOpen, updateTimezone],
+	);
+
+	// Register keyboard shortcuts
+	const { registerShortcut, deregisterShortcut } = useKeyboardHotkeys();
+
+	useEffect(() => {
+		registerShortcut(
+			TimezonePickerShortcuts.CloseTimezonePicker,
+			handleCloseTimezonePicker,
+		);
+
+		return (): void => {
+			deregisterShortcut(TimezonePickerShortcuts.CloseTimezonePicker);
+		};
+	}, [deregisterShortcut, handleCloseTimezonePicker, registerShortcut]);
+
+	return (
+		<div className="timezone-picker">
+			<SearchBar value={searchTerm} onChange={setSearchTerm} />
+			<div className="timezone-picker__list">
+				{getFilteredTimezones(searchTerm).map((timezone) => (
+					<TimezoneItem
+						key={timezone.value}
+						timezone={timezone}
+						isSelected={timezone.name === selectedTimezone}
+						onClick={(): void => handleTimezoneSelect(timezone)}
+					/>
+				))}
+			</div>
+		</div>
+	);
+}
+
+export default TimezonePicker;

frontend/src/components/CustomTimePicker/timezoneUtils.ts

@@ -0,0 +1,142 @@
+import { getTimeZones } from '@vvo/tzdb';
+import dayjs from 'dayjs';
+import timezone from 'dayjs/plugin/timezone';
+import utc from 'dayjs/plugin/utc';
+
+dayjs.extend(utc);
+dayjs.extend(timezone);
+
+export interface Timezone {
+	name: string;
+	value: string;
+	offset: string;
+	searchIndex: string;
+	hasDivider?: boolean;
+}
+
+// Constants
+const TIMEZONE_TYPES = {
+	BROWSER: 'BROWSER',
+	UTC: 'UTC',
+	STANDARD: 'STANDARD',
+} as const;
+
+type TimezoneType = typeof TIMEZONE_TYPES[keyof typeof TIMEZONE_TYPES];
+
+const UTC_TIMEZONE: Timezone = {
+	name: 'Coordinated Universal Time — UTC, GMT',
+	value: 'UTC',
+	offset: 'UTC',
+	searchIndex: 'UTC',
+	hasDivider: true,
+};
+
+// Helper functions
+const isValidTimezone = (tzName: string): boolean => {
+	try {
+		dayjs.tz(dayjs(), tzName);
+		return true;
+	} catch {
+		return false;
+	}
+};
+
+const formatOffset = (offsetMinutes: number): string => {
+	if (offsetMinutes === 0) return 'UTC';
+
+	const hours = Math.floor(Math.abs(offsetMinutes) / 60);
+	const minutes = Math.abs(offsetMinutes) % 60;
+	const sign = offsetMinutes > 0 ? '+' : '-';
+
+	return `UTC ${sign} ${hours}${
+		minutes ? `:${minutes.toString().padStart(2, '0')}` : ':00'
+	}`;
+};
+
+const createTimezoneEntry = (
+	name: string,
+	offsetMinutes: number,
+	type: TimezoneType = TIMEZONE_TYPES.STANDARD,
+	hasDivider = false,
+): Timezone => {
+	const offset = formatOffset(offsetMinutes);
+	let value = name;
+	let displayName = name;
+
+	switch (type) {
+		case TIMEZONE_TYPES.BROWSER:
+			displayName = `Browser time — ${name}`;
+			value = name;
+			break;
+		case TIMEZONE_TYPES.UTC:
+			displayName = 'Coordinated Universal Time — UTC, GMT';
+			value = 'UTC';
+			break;
+		case TIMEZONE_TYPES.STANDARD:
+			displayName = name;
+			value = name;
+			break;
+		default:
+			console.error(`Invalid timezone type: ${type}`);
+	}
+
+	return {
+		name: displayName,
+		value,
+		offset,
+		searchIndex: offset.replace(/ /g, ''),
+		...(hasDivider && { hasDivider }),
+	};
+};
+
+const getOffsetByTimezone = (timezone: string): number => {
+	const dayjsTimezone = dayjs().tz(timezone);
+	return dayjsTimezone.utcOffset();
+};
+
+export const getBrowserTimezone = (): Timezone => {
+	const browserTz = dayjs.tz.guess();
+	const browserOffset = getOffsetByTimezone(browserTz);
+	return createTimezoneEntry(browserTz, browserOffset, TIMEZONE_TYPES.BROWSER);
+};
+
+const filterAndSortTimezones = (
+	allTimezones: ReturnType<typeof getTimeZones>,
+	browserTzName?: string,
+): Timezone[] =>
+	allTimezones
+		.filter(
+			(tz) =>
+				!tz.name.startsWith('Etc/') &&
+				isValidTimezone(tz.name) &&
+				tz.name !== browserTzName,
+		)
+		.sort((a, b) => a.name.localeCompare(b.name))
+		.map((tz) => createTimezoneEntry(tz.name, tz.rawOffsetInMinutes));
+
+const generateTimezoneData = (): Timezone[] => {
+	const allTimezones = getTimeZones();
+	const timezones: Timezone[] = [];
+
+	// Add browser timezone
+	const browserTzObject = getBrowserTimezone();
+	timezones.push(browserTzObject);
+
+	// Add UTC timezone with divider
+	timezones.push(UTC_TIMEZONE);
+
+	// Add remaining timezones
+	timezones.push(...filterAndSortTimezones(allTimezones, browserTzObject.value));
+
+	return timezones;
+};
+
+export const getTimezoneObjectByTimezoneString = (
+	timezone: string,
+): Timezone => {
+	const utcOffset = getOffsetByTimezone(timezone);
+
+	return createTimezoneEntry(timezone, utcOffset);
+};
+
+export const TIMEZONE_DATA = generateTimezoneData();

frontend/src/constants/localStorage.ts

@@ -21,4 +21,5 @@ export enum LOCALSTORAGE {
 	THEME_ANALYTICS_V1 = 'THEME_ANALYTICS_V1',
 	LAST_USED_SAVED_VIEWS = 'LAST_USED_SAVED_VIEWS',
 	SHOW_LOGS_QUICK_FILTERS = 'SHOW_LOGS_QUICK_FILTERS',
+	PREFERRED_TIMEZONE = 'PREFERRED_TIMEZONE',
 }

frontend/src/constants/shortcuts/TimezonePickerShortcuts.ts

@@ -0,0 +1,3 @@
+export const TimezonePickerShortcuts = {
+	CloseTimezonePicker: 'escape',
+};

frontend/src/container/AlertHistory/Timeline/Graph/Graph.tsx

@@ -7,6 +7,7 @@ import useUrlQuery from 'hooks/useUrlQuery';
 import history from 'lib/history';
 import heatmapPlugin from 'lib/uPlotLib/plugins/heatmapPlugin';
 import timelinePlugin from 'lib/uPlotLib/plugins/timelinePlugin';
+import { useTimezone } from 'providers/Timezone';
 import { useMemo, useRef } from 'react';
 import { useDispatch } from 'react-redux';
 import { UpdateTimeInterval } from 'store/actions';
@@ -48,6 +49,7 @@ function HorizontalTimelineGraph({
 
 	const urlQuery = useUrlQuery();
 	const dispatch = useDispatch();
+	const { timezone } = useTimezone();
 
 	const options: uPlot.Options = useMemo(
 		() => ({
@@ -116,8 +118,18 @@ function HorizontalTimelineGraph({
 							}),
 					  ]
 					: [],
+
+			tzDate: (timestamp: number): Date =>
+				uPlot.tzDate(new Date(timestamp * 1e3), timezone?.value),
 		}),
-		[width, isDarkMode, transformedData.length, urlQuery, dispatch],
+		[
+			width,
+			isDarkMode,
+			transformedData.length,
+			urlQuery,
+			dispatch,
+			timezone?.value,
+		],
 	);
 	return <Uplot data={transformedData} options={options} />;
 }

frontend/src/container/AnomalyAlertEvaluationView/AnomalyAlertEvaluationView.tsx

@@ -10,6 +10,7 @@ import getAxes from 'lib/uPlotLib/utils/getAxes';
 import { getUplotChartDataForAnomalyDetection } from 'lib/uPlotLib/utils/getUplotChartData';
 import { getYAxisScaleForAnomalyDetection } from 'lib/uPlotLib/utils/getYAxisScale';
 import { LineChart } from 'lucide-react';
+import { useTimezone } from 'providers/Timezone';
 import { useEffect, useRef, useState } from 'react';
 import uPlot from 'uplot';
 
@@ -148,10 +149,12 @@ function AnomalyAlertEvaluationView({
 		  ]
 		: [];
 
+	const { timezone } = useTimezone();
+
 	const options = {
 		width: dimensions.width,
 		height: dimensions.height - 36,
-		plugins: [bandsPlugin, tooltipPlugin(isDarkMode)],
+		plugins: [bandsPlugin, tooltipPlugin(isDarkMode, timezone?.value)],
 		focus: {
 			alpha: 0.3,
 		},
@@ -256,6 +259,8 @@ function AnomalyAlertEvaluationView({
 			show: true,
 		},
 		axes: getAxes(isDarkMode, yAxisUnit),
+		tzDate: (timestamp: number): Date =>
+			uPlot.tzDate(new Date(timestamp * 1e3), timezone?.value),
 	};
 
 	const handleSearch = (searchText: string): void => {

frontend/src/container/AnomalyAlertEvaluationView/tooltipPlugin.ts

@@ -1,8 +1,10 @@
 import { themeColors } from 'constants/theme';
+import dayjs from 'dayjs';
 import { generateColor } from 'lib/uPlotLib/utils/generateColor';
 
 const tooltipPlugin = (
 	isDarkMode: boolean,
+	timezone: string,
 ): { hooks: { init: (u: any) => void } } => {
 	let tooltip: HTMLDivElement;
 	const tooltipLeftOffset = 10;
@@ -17,7 +19,7 @@ const tooltipPlugin = (
 			return value.toFixed(3);
 		}
 		if (value instanceof Date) {
-			return value.toLocaleString();
+			return dayjs(value).tz(timezone).format('MM/DD/YYYY, h:mm:ss A');
 		}
 		if (value == null) {
 			return 'N/A';

frontend/src/container/FormAlertRules/ChartPreview/index.tsx

@@ -25,6 +25,7 @@ import getTimeString from 'lib/getTimeString';
 import history from 'lib/history';
 import { getUPlotChartOptions } from 'lib/uPlotLib/getUplotChartOptions';
 import { getUPlotChartData } from 'lib/uPlotLib/utils/getUplotChartData';
+import { useTimezone } from 'providers/Timezone';
 import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
 import { useTranslation } from 'react-i18next';
 import { useDispatch, useSelector } from 'react-redux';
@@ -35,6 +36,7 @@ import { AlertDef } from 'types/api/alerts/def';
 import { Query } from 'types/api/queryBuilder/queryBuilderData';
 import { EQueryType } from 'types/common/dashboard';
 import { GlobalReducer } from 'types/reducer/globalTime';
+import uPlot from 'uplot';
 import { getGraphType } from 'utils/getGraphType';
 import { getSortedSeriesData } from 'utils/getSortedSeriesData';
 import { getTimeRange } from 'utils/getTimeRange';
@@ -201,6 +203,8 @@ function ChartPreview({
 		[dispatch, location.pathname, urlQuery],
 	);
 
+	const { timezone } = useTimezone();
+
 	const options = useMemo(
 		() =>
 			getUPlotChartOptions({
@@ -236,6 +240,9 @@ function ChartPreview({
 				softMax: null,
 				softMin: null,
 				panelType: graphType,
+				tzDate: (timestamp: number) =>
+					uPlot.tzDate(new Date(timestamp * 1e3), timezone?.value),
+				timezone: timezone?.value,
 			}),
 		[
 			yAxisUnit,
@@ -250,6 +257,7 @@ function ChartPreview({
 			optionName,
 			alertDef?.condition.targetUnit,
 			graphType,
+			timezone?.value,
 		],
 	);
 

frontend/src/container/GantChart/Span/index.tsx

@@ -4,6 +4,7 @@ import { Popover, Typography } from 'antd';
 import { convertTimeToRelevantUnit } from 'container/TraceDetail/utils';
 import dayjs from 'dayjs';
 import { useIsDarkMode } from 'hooks/useDarkMode';
+import { useTimezone } from 'providers/Timezone';
 import { useEffect } from 'react';
 import { toFixed } from 'utils/toFixed';
 
@@ -32,13 +33,17 @@ function Span(props: SpanLengthProps): JSX.Element {
 	const isDarkMode = useIsDarkMode();
 	const { time, timeUnitName } = convertTimeToRelevantUnit(inMsCount);
 
+	const { timezone } = useTimezone();
+
 	useEffect(() => {
 		document.documentElement.scrollTop = document.documentElement.clientHeight;
 		document.documentElement.scrollLeft = document.documentElement.clientWidth;
 	}, []);
 
 	const getContent = (): JSX.Element => {
-		const timeStamp = dayjs(startTime).format('h:mm:ss:SSS A');
+		const timeStamp = dayjs(startTime)
+			.tz(timezone.value)
+			.format('h:mm:ss:SSS A (UTC Z)');
 		const startTimeInMs = startTime - globalStart;
 		return (
 			<div>

frontend/src/container/LogDetailedView/InfraMetrics/NodeMetrics.tsx

@@ -8,10 +8,12 @@ import { useResizeObserver } from 'hooks/useDimensions';
 import { GetMetricQueryRange } from 'lib/dashboard/getQueryResults';
 import { getUPlotChartOptions } from 'lib/uPlotLib/getUplotChartOptions';
 import { getUPlotChartData } from 'lib/uPlotLib/utils/getUplotChartData';
+import { useTimezone } from 'providers/Timezone';
 import { useMemo, useRef } from 'react';
 import { useQueries, UseQueryResult } from 'react-query';
 import { SuccessResponse } from 'types/api';
 import { MetricRangePayloadProps } from 'types/api/metrics/getQueryRange';
+import uPlot from 'uplot';
 
 import {
 	getHostQueryPayload,
@@ -73,6 +75,8 @@ function NodeMetrics({
 		[queries],
 	);
 
+	const { timezone } = useTimezone();
+
 	const options = useMemo(
 		() =>
 			queries.map(({ data }, idx) =>
@@ -86,6 +90,9 @@ function NodeMetrics({
 					minTimeScale: start,
 					maxTimeScale: end,
 					verticalLineTimestamp,
+					tzDate: (timestamp: number) =>
+						uPlot.tzDate(new Date(timestamp * 1e3), timezone?.value),
+					timezone: timezone?.value,
 				}),
 			),
 		[
@@ -96,6 +103,7 @@ function NodeMetrics({
 			start,
 			verticalLineTimestamp,
 			end,
+			timezone?.value,
 		],
 	);
 

frontend/src/container/LogDetailedView/InfraMetrics/PodMetrics.tsx

@@ -8,10 +8,12 @@ import { useResizeObserver } from 'hooks/useDimensions';
 import { GetMetricQueryRange } from 'lib/dashboard/getQueryResults';
 import { getUPlotChartOptions } from 'lib/uPlotLib/getUplotChartOptions';
 import { getUPlotChartData } from 'lib/uPlotLib/utils/getUplotChartData';
+import { useTimezone } from 'providers/Timezone';
 import { useMemo, useRef } from 'react';
 import { useQueries, UseQueryResult } from 'react-query';
 import { SuccessResponse } from 'types/api';
 import { MetricRangePayloadProps } from 'types/api/metrics/getQueryRange';
+import uPlot from 'uplot';
 
 import { getPodQueryPayload, podWidgetInfo } from './constants';
 
@@ -60,6 +62,7 @@ function PodMetrics({
 		() => queries.map(({ data }) => getUPlotChartData(data?.payload)),
 		[queries],
 	);
+	const { timezone } = useTimezone();
 
 	const options = useMemo(
 		() =>
@@ -74,9 +77,20 @@ function PodMetrics({
 					minTimeScale: start,
 					maxTimeScale: end,
 					verticalLineTimestamp,
+					tzDate: (timestamp: number) =>
+						uPlot.tzDate(new Date(timestamp * 1e3), timezone?.value),
+					timezone: timezone?.value,
 				}),
 			),
-		[queries, isDarkMode, dimensions, start, verticalLineTimestamp, end],
+		[
+			queries,
+			isDarkMode,
+			dimensions,
+			start,
+			end,
+			verticalLineTimestamp,
+			timezone?.value,
+		],
 	);
 
 	const renderCardContent = (

frontend/src/container/MySettings/TimezoneAdaptation/TimezoneAdaptation.styles.scss

@@ -0,0 +1,81 @@
+.timezone-adaption {
+	padding: 16px;
+	background: var(--bg-ink-400);
+	border: 1px solid var(--bg-ink-500);
+	border-radius: 4px;
+
+	&__header {
+		display: flex;
+		justify-content: space-between;
+		align-items: center;
+		margin-bottom: 8px;
+	}
+
+	&__title {
+		color: var(--bg-vanilla-300);
+		font-size: 14px;
+		font-weight: 500;
+		margin: 0;
+	}
+
+	&__description {
+		color: var(--bg-vanilla-400);
+		font-size: 14px;
+		line-height: 20px;
+		margin: 0 0 12px 0;
+	}
+
+	&__note {
+		display: flex;
+		align-items: center;
+		justify-content: space-between;
+		padding: 7.5px 12px;
+		background: rgba(78, 116, 248, 0.1);
+		border: 1px solid rgba(78, 116, 248, 0.1);
+		border-radius: 4px;
+	}
+
+	&__bullet {
+		color: var(--bg-robin-400);
+		font-size: 16px;
+		line-height: 20px;
+	}
+
+	&__note-text-container {
+		display: flex;
+		align-items: center;
+		gap: 10px;
+	}
+
+	&__note-text {
+		display: flex;
+		align-items: center;
+		gap: 4px;
+		color: var(--bg-robin-400);
+		font-size: 14px;
+		line-height: 20px;
+	}
+	&__note-text-overridden {
+		display: flex;
+		align-items: center;
+		padding: 0 2px;
+		background: rgba(171, 189, 255, 0.04);
+		border-radius: 2px;
+		font-size: 12px;
+		line-height: 16px;
+		color: var(--bg-vanilla-100);
+	}
+	&__clear-override {
+		display: flex;
+		align-items: center;
+		gap: 6px;
+		background: transparent;
+		border: none;
+		padding: 0;
+		color: var(--bg-robin-300);
+		font-size: 12px;
+		line-height: 16px; /* 133.333% */
+		letter-spacing: 0.12px;
+		cursor: pointer;
+	}
+}

frontend/src/container/MySettings/TimezoneAdaptation/TimezoneAdaptation.tsx

@@ -0,0 +1,78 @@
+import './TimezoneAdaptation.styles.scss';
+
+import { Color } from '@signozhq/design-tokens';
+import { Switch } from 'antd';
+import { Delete } from 'lucide-react';
+import { useTimezone } from 'providers/Timezone';
+import { useMemo, useState } from 'react';
+
+function TimezoneAdaptation(): JSX.Element {
+	const { timezone, browserTimezone, updateTimezone } = useTimezone();
+
+	const isTimezoneOverridden = useMemo(
+		() => timezone?.offset !== browserTimezone.offset,
+		[timezone, browserTimezone],
+	);
+
+	const [isAdaptationEnabled, setIsAdaptationEnabled] = useState(true);
+
+	const getSwitchStyles = (): React.CSSProperties => ({
+		backgroundColor:
+			isAdaptationEnabled && isTimezoneOverridden ? Color.BG_AMBER_400 : undefined,
+	});
+
+	const handleOverrideClear = (): void => {
+		updateTimezone(browserTimezone);
+	};
+
+	return (
+		<div className="timezone-adaption">
+			<div className="timezone-adaption__header">
+				<h2 className="timezone-adaption__title">Adapt to my timezone</h2>
+				<Switch
+					checked={isAdaptationEnabled}
+					onChange={setIsAdaptationEnabled}
+					style={getSwitchStyles()}
+				/>
+			</div>
+
+			<p className="timezone-adaption__description">
+				Adapt the timestamps shown in the SigNoz console to my active timezone.
+			</p>
+
+			<div className="timezone-adaption__note">
+				<div className="timezone-adaption__note-text-container">
+					<span className="timezone-adaption__bullet">•</span>
+					<span className="timezone-adaption__note-text">
+						{isTimezoneOverridden ? (
+							<>
+								Your current timezone is overridden to
+								<span className="timezone-adaption__note-text-overridden">
+									{timezone?.offset}
+								</span>
+							</>
+						) : (
+							<>
+								You can override the timezone adaption for any view with the time
+								picker.
+							</>
+						)}
+					</span>
+				</div>
+
+				{!!isTimezoneOverridden && (
+					<button
+						type="button"
+						className="timezone-adaption__clear-override"
+						onClick={handleOverrideClear}
+					>
+						<Delete height={12} width={12} color={Color.BG_ROBIN_300} />
+						Clear override
+					</button>
+				)}
+			</div>
+		</div>
+	);
+}
+
+export default TimezoneAdaptation;

frontend/src/container/MySettings/index.tsx

@@ -7,6 +7,7 @@ import { LogOut, Moon, Sun } from 'lucide-react';
 import { useState } from 'react';
 
 import Password from './Password';
+import TimezoneAdaptation from './TimezoneAdaptation/TimezoneAdaptation';
 import UserInfo from './UserInfo';
 
 function MySettings(): JSX.Element {
@@ -78,6 +79,8 @@ function MySettings(): JSX.Element {
 				<Password />
 			</div>
 
+			<TimezoneAdaptation />
+
 			<Button
 				className="flexBtn"
 				onClick={(): void => Logout()}

frontend/src/container/PanelWrapper/UplotPanelWrapper.tsx

@@ -14,7 +14,9 @@ import { getUPlotChartData } from 'lib/uPlotLib/utils/getUplotChartData';
 import { cloneDeep, isEqual, isUndefined } from 'lodash-es';
 import _noop from 'lodash-es/noop';
 import { useDashboard } from 'providers/Dashboard/Dashboard';
+import { useTimezone } from 'providers/Timezone';
 import { useEffect, useMemo, useRef, useState } from 'react';
+import uPlot from 'uplot';
 import { getSortedSeriesData } from 'utils/getSortedSeriesData';
 import { getTimeRange } from 'utils/getTimeRange';
 
@@ -105,6 +107,8 @@ function UplotPanelWrapper({
 		}
 	}, [graphVisibility, hiddenGraph, widget.panelTypes, widget?.stackedBarChart]);
 
+	const { timezone } = useTimezone();
+
 	const options = useMemo(
 		() =>
 			getUPlotChartOptions({
@@ -128,6 +132,9 @@ function UplotPanelWrapper({
 				hiddenGraph,
 				setHiddenGraph,
 				customTooltipElement,
+				tzDate: (timestamp: number) =>
+					uPlot.tzDate(new Date(timestamp * 1e3), timezone?.value),
+				timezone: timezone?.value,
 			}),
 		[
 			widget?.id,
@@ -150,6 +157,7 @@ function UplotPanelWrapper({
 			currentQuery,
 			hiddenGraph,
 			customTooltipElement,
+			timezone?.value,
 		],
 	);
 

frontend/src/container/TimeSeriesView/TimeSeriesView.tsx

@@ -17,6 +17,7 @@ import history from 'lib/history';
 import { getUPlotChartOptions } from 'lib/uPlotLib/getUplotChartOptions';
 import { getUPlotChartData } from 'lib/uPlotLib/utils/getUplotChartData';
 import { isEmpty } from 'lodash-es';
+import { useTimezone } from 'providers/Timezone';
 import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
 import { useDispatch, useSelector } from 'react-redux';
 import { useLocation } from 'react-router-dom';
@@ -26,6 +27,7 @@ import { SuccessResponse } from 'types/api';
 import { MetricRangePayloadProps } from 'types/api/metrics/getQueryRange';
 import { DataSource } from 'types/common/queryBuilder';
 import { GlobalReducer } from 'types/reducer/globalTime';
+import uPlot from 'uplot';
 import { getTimeRange } from 'utils/getTimeRange';
 
 import { Container } from './styles';
@@ -118,6 +120,8 @@ function TimeSeriesView({
 		// eslint-disable-next-line react-hooks/exhaustive-deps
 	}, []);
 
+	const { timezone } = useTimezone();
+
 	const chartOptions = getUPlotChartOptions({
 		onDragSelect,
 		yAxisUnit: yAxisUnit || '',
@@ -131,6 +135,9 @@ function TimeSeriesView({
 		maxTimeScale,
 		softMax: null,
 		softMin: null,
+		tzDate: (timestamp: number) =>
+			uPlot.tzDate(new Date(timestamp * 1e3), timezone?.value),
+		timezone: timezone?.value,
 	});
 
 	return (

frontend/src/container/TopNav/DateTimeSelectionV2/index.tsx

@@ -28,6 +28,7 @@ import getTimeString from 'lib/getTimeString';
 import history from 'lib/history';
 import { isObject } from 'lodash-es';
 import { Check, Copy, Info, Send, Undo } from 'lucide-react';
+import { useTimezone } from 'providers/Timezone';
 import { useCallback, useEffect, useMemo, useState } from 'react';
 import { useQueryClient } from 'react-query';
 import { connect, useSelector } from 'react-redux';
@@ -613,6 +614,8 @@ function DateTimeSelection({
 		);
 	};
 
+	const { timezone } = useTimezone();
+
 	return (
 		<div className="date-time-selector">
 			{showResetButton && selectedTime !== defaultRelativeTime && (
@@ -664,8 +667,8 @@ function DateTimeSelection({
 							setIsValidteRelativeTime(isValid);
 						}}
 						selectedValue={getInputLabel(
-							dayjs(minTime / 1000000),
-							dayjs(maxTime / 1000000),
+							dayjs(minTime / 1000000).tz(timezone.value),
+							dayjs(maxTime / 1000000).tz(timezone.value),
 							selectedTime,
 						)}
 						data-testid="dropDown"

frontend/src/container/TraceDetail/index.tsx

@@ -24,6 +24,7 @@ import history from 'lib/history';
 import { map } from 'lodash-es';
 import { PanelRight } from 'lucide-react';
 import { SPAN_DETAILS_LEFT_COL_WIDTH } from 'pages/TraceDetail/constants';
+import { useTimezone } from 'providers/Timezone';
 import { useEffect, useMemo, useState } from 'react';
 import { ITraceForest, PayloadProps } from 'types/api/trace/getTraceItem';
 import { getSpanTreeMetadata } from 'utils/getSpanTreeMetadata';
@@ -139,6 +140,8 @@ function TraceDetail({ response }: TraceDetailProps): JSX.Element {
 
 	const isDarkMode = useIsDarkMode();
 
+	const { timezone } = useTimezone();
+
 	return (
 		<StyledRow styledclass={[Flex({ flex: 1 })]}>
 			<StyledCol flex="auto" styledclass={styles.leftContainer}>
@@ -195,7 +198,9 @@ function TraceDetail({ response }: TraceDetailProps): JSX.Element {
 					{isGlobalTimeVisible && (
 						<styles.TimeStampContainer flex={`${SPAN_DETAILS_LEFT_COL_WIDTH}px`}>
 							<Typography>
-								{dayjs(traceMetaData.globalStart).format('hh:mm:ss a MM/DD')}
+								{dayjs(traceMetaData.globalStart)
+									.tz(timezone.value)
+									.format('hh:mm:ss a (UTC Z) MM/DD')}
 							</Typography>
 						</styles.TimeStampContainer>
 					)}

frontend/src/index.tsx

@@ -7,6 +7,7 @@ import { AxiosError } from 'axios';
 import { ThemeProvider } from 'hooks/useDarkMode';
 import ErrorBoundaryFallback from 'pages/ErrorBoundaryFallback/ErrorBoundaryFallback';
 import posthog from 'posthog-js';
+import TimezoneProvider from 'providers/Timezone';
 import { createRoot } from 'react-dom/client';
 import { HelmetProvider } from 'react-helmet-async';
 import { QueryClient, QueryClientProvider } from 'react-query';
@@ -69,14 +70,16 @@ if (container) {
 		<Sentry.ErrorBoundary fallback={<ErrorBoundaryFallback />}>
 			<HelmetProvider>
 				<ThemeProvider>
-					<QueryClientProvider client={queryClient}>
-						<Provider store={store}>
-							<AppRoutes />
-						</Provider>
-						{process.env.NODE_ENV === 'development' && (
-							<ReactQueryDevtools initialIsOpen={false} />
-						)}
-					</QueryClientProvider>
+					<TimezoneProvider>
+						<QueryClientProvider client={queryClient}>
+							<Provider store={store}>
+								<AppRoutes />
+							</Provider>
+							{process.env.NODE_ENV === 'development' && (
+								<ReactQueryDevtools initialIsOpen={false} />
+							)}
+						</QueryClientProvider>
+					</TimezoneProvider>
 				</ThemeProvider>
 			</HelmetProvider>
 		</Sentry.ErrorBoundary>,

frontend/src/lib/uPlotLib/getUplotChartOptions.ts

@@ -55,6 +55,8 @@ export interface GetUPlotChartOptions {
 	>;
 	customTooltipElement?: HTMLDivElement;
 	verticalLineTimestamp?: number;
+	tzDate?: (timestamp: number) => Date;
+	timezone?: string;
 }
 
 /** the function converts series A , series B , series C to
@@ -158,6 +160,8 @@ export const getUPlotChartOptions = ({
 	setHiddenGraph,
 	customTooltipElement,
 	verticalLineTimestamp,
+	tzDate,
+	timezone,
 }: GetUPlotChartOptions): uPlot.Options => {
 	const timeScaleProps = getXAxisScale(minTimeScale, maxTimeScale);
 
@@ -196,6 +200,7 @@ export const getUPlotChartOptions = ({
 				fill: (): string => '#fff',
 			},
 		},
+		tzDate,
 		padding: [16, 16, 8, 8],
 		bands,
 		scales: {
@@ -222,6 +227,7 @@ export const getUPlotChartOptions = ({
 				stackBarChart,
 				isDarkMode,
 				customTooltipElement,
+				timezone,
 			}),
 			onClickPlugin({
 				onClick: onClickHandler,

frontend/src/lib/uPlotLib/plugins/tooltipPlugin.ts

@@ -46,6 +46,7 @@ const generateTooltipContent = (
 	isHistogramGraphs?: boolean,
 	isMergedSeries?: boolean,
 	stackBarChart?: boolean,
+	timezone?: string,
 	// eslint-disable-next-line sonarjs/cognitive-complexity
 ): HTMLElement => {
 	const container = document.createElement('div');
@@ -69,9 +70,13 @@ const generateTooltipContent = (
 		series.forEach((item, index) => {
 			if (index === 0) {
 				if (isBillingUsageGraphs) {
-					tooltipTitle = dayjs(data[0][idx] * 1000).format('MMM DD YYYY');
+					tooltipTitle = dayjs(data[0][idx] * 1000)
+						.tz(timezone)
+						.format('MMM DD YYYY');
 				} else {
-					tooltipTitle = dayjs(data[0][idx] * 1000).format('MMM DD YYYY HH:mm:ss');
+					tooltipTitle = dayjs(data[0][idx] * 1000)
+						.tz(timezone)
+						.format('MMM DD YYYY h:mm:ss A');
 				}
 			} else if (item.show) {
 				const {
@@ -223,6 +228,7 @@ type ToolTipPluginProps = {
 	stackBarChart?: boolean;
 	isDarkMode: boolean;
 	customTooltipElement?: HTMLDivElement;
+	timezone?: string;
 };
 
 const tooltipPlugin = ({
@@ -234,6 +240,7 @@ const tooltipPlugin = ({
 	stackBarChart,
 	isDarkMode,
 	customTooltipElement,
+	timezone,
 }: // eslint-disable-next-line sonarjs/cognitive-complexity
 ToolTipPluginProps): any => {
 	let over: HTMLElement;
@@ -300,6 +307,7 @@ ToolTipPluginProps): any => {
 							isHistogramGraphs,
 							isMergedSeries,
 							stackBarChart,
+							timezone,
 						);
 						if (customTooltipElement) {
 							content.appendChild(customTooltipElement);

frontend/src/providers/Timezone.tsx

@@ -0,0 +1,84 @@
+import {
+	getBrowserTimezone,
+	getTimezoneObjectByTimezoneString,
+	Timezone,
+} from 'components/CustomTimePicker/timezoneUtils';
+import { LOCALSTORAGE } from 'constants/localStorage';
+import React, {
+	createContext,
+	useCallback,
+	useContext,
+	useMemo,
+	useState,
+} from 'react';
+
+interface TimezoneContextType {
+	timezone: Timezone;
+	browserTimezone: Timezone;
+	updateTimezone: (timezone: Timezone) => void;
+}
+
+const TimezoneContext = createContext<TimezoneContextType | undefined>(
+	undefined,
+);
+
+function TimezoneProvider({
+	children,
+}: {
+	children: React.ReactNode;
+}): JSX.Element {
+	const getStoredTimezoneValue = (): Timezone | null => {
+		try {
+			const timezoneValue = localStorage.getItem(LOCALSTORAGE.PREFERRED_TIMEZONE);
+			if (timezoneValue) {
+				return getTimezoneObjectByTimezoneString(timezoneValue);
+			}
+		} catch (error) {
+			console.error('Error reading timezone from localStorage:', error);
+		}
+		return null;
+	};
+
+	const setStoredTimezoneValue = (value: string): void => {
+		try {
+			localStorage.setItem(LOCALSTORAGE.PREFERRED_TIMEZONE, value);
+		} catch (error) {
+			console.error('Error saving timezone to localStorage:', error);
+		}
+	};
+
+	const browserTimezone = useMemo(() => getBrowserTimezone(), []);
+
+	const [timezone, setTimezone] = useState<Timezone>(
+		getStoredTimezoneValue() ?? browserTimezone,
+	);
+
+	const updateTimezone = useCallback((timezone: Timezone): void => {
+		// TODO(shaheer): replace this with user preferences API
+		setStoredTimezoneValue(timezone.value);
+		setTimezone(timezone);
+	}, []);
+
+	const value = React.useMemo(
+		() => ({
+			timezone,
+			browserTimezone,
+			updateTimezone,
+		}),
+		[timezone, browserTimezone, updateTimezone],
+	);
+
+	return (
+		<TimezoneContext.Provider value={value}>{children}</TimezoneContext.Provider>
+	);
+}
+
+export const useTimezone = (): TimezoneContextType => {
+	const context = useContext(TimezoneContext);
+	if (context === undefined) {
+		throw new Error('useTimezone must be used within a TimezoneProvider');
+	}
+	return context;
+};
+
+export default TimezoneProvider;

frontend/yarn.lock

@@ -4764,6 +4764,11 @@
     d3-time-format "4.1.0"
     internmap "2.0.3"
 
+"@vvo/tzdb@6.149.0":
+  version "6.149.0"
+  resolved "https://registry.yarnpkg.com/@vvo/tzdb/-/tzdb-6.149.0.tgz#e4fcca3c49b90d5910a8679267540cb532809075"
+  integrity sha512-d68+oW1TE60Ho9FlCDO5Ks4suk6hp5umjNIrtWytVB0B/X0/P1T9yWdnH7EhNb2fx1CQE+MM1qmLUGzT+QAqdw==
+
 "@webassemblyjs/ast@1.12.1":
   version "1.12.1"
   resolved "https://registry.yarnpkg.com/@webassemblyjs/ast/-/ast-1.12.1.tgz#bb16a0e8b1914f979f45864c23819cc3e3f0d4bb"