diff --git a/app/client/components/cron-input.tsx b/app/client/components/cron-input.tsx
index 35e387ed..fde40eec 100644
--- a/app/client/components/cron-input.tsx
+++ b/app/client/components/cron-input.tsx
@@ -3,7 +3,7 @@ import { AlertCircle, CheckCircle2 } from "lucide-react";
 import { useMemo } from "react";
 import { FormControl, FormDescription, FormItem, FormLabel, FormMessage } from "~/client/components/ui/form";
 import { Input } from "~/client/components/ui/input";
-import { formatDateTime } from "~/client/lib/datetime";
+import { useTimeFormat } from "~/client/lib/datetime";
 import { cn } from "~/client/lib/utils";
 
 interface CronInputProps {
@@ -13,6 +13,7 @@ interface CronInputProps {
 }
 
 export function CronInput({ value, onChange, error }: CronInputProps) {
+	const { formatDateTime } = useTimeFormat();
 	const { isValid, nextRuns, parseError } = useMemo(() => {
 		if (!value) {
 			return { isValid: false, nextRuns: [], parseError: null };
diff --git a/app/client/components/file-browsers/local-file-browser.tsx b/app/client/components/file-browsers/local-file-browser.tsx
index b2213626..69e8d010 100644
--- a/app/client/components/file-browsers/local-file-browser.tsx
+++ b/app/client/components/file-browsers/local-file-browser.tsx
@@ -4,6 +4,7 @@ import { FileBrowser, type FileBrowserUiProps } from "~/client/components/file-b
 import { useFileBrowser } from "~/client/hooks/use-file-browser";
 import { parseError } from "~/client/lib/errors";
 import { normalizeAbsolutePath } from "@zerobyte/core/utils";
+import { logger } from "~/client/lib/logger";
 
 type LocalFileBrowserProps = FileBrowserUiProps & {
 	initialPath?: string;
@@ -26,7 +27,7 @@ export const LocalFileBrowser = ({ initialPath = "/", enabled = true, ...uiProps
 			return await queryClient.ensureQueryData(browseFilesystemOptions({ query: { path } }));
 		},
 		prefetchFolder: (path) => {
-			void queryClient.prefetchQuery(browseFilesystemOptions({ query: { path } }));
+			void queryClient.prefetchQuery(browseFilesystemOptions({ query: { path } })).catch((e) => logger.error(e));
 		},
 	});
 
diff --git a/app/client/components/file-browsers/snapshot-tree-browser.tsx b/app/client/components/file-browsers/snapshot-tree-browser.tsx
index 507b0002..993b935f 100644
--- a/app/client/components/file-browsers/snapshot-tree-browser.tsx
+++ b/app/client/components/file-browsers/snapshot-tree-browser.tsx
@@ -5,6 +5,7 @@ import { FileBrowser, type FileBrowserUiProps } from "~/client/components/file-b
 import { useFileBrowser } from "~/client/hooks/use-file-browser";
 import { parseError } from "~/client/lib/errors";
 import { normalizeAbsolutePath } from "@zerobyte/core/utils";
+import { logger } from "~/client/lib/logger";
 
 type SnapshotTreeBrowserProps = FileBrowserUiProps & {
 	repositoryId: string;
@@ -79,12 +80,14 @@ export const SnapshotTreeBrowser = ({
 			);
 		},
 		prefetchFolder: (path) => {
-			void queryClient.prefetchQuery(
-				listSnapshotFilesOptions({
-					path: { shortId: repositoryId, snapshotId },
-					query: { path, offset: 0, limit: pageSize },
-				}),
-			);
+			void queryClient
+				.prefetchQuery(
+					listSnapshotFilesOptions({
+						path: { shortId: repositoryId, snapshotId },
+						query: { path, offset: 0, limit: pageSize },
+					}),
+				)
+				.catch((e) => logger.error(e));
 		},
 		pathTransform: {
 			strip: stripBasePath,
diff --git a/app/client/components/file-browsers/volume-file-browser.tsx b/app/client/components/file-browsers/volume-file-browser.tsx
index 902b191a..347da3ef 100644
--- a/app/client/components/file-browsers/volume-file-browser.tsx
+++ b/app/client/components/file-browsers/volume-file-browser.tsx
@@ -3,6 +3,7 @@ import { listFilesOptions } from "~/client/api-client/@tanstack/react-query.gen"
 import { FileBrowser, type FileBrowserUiProps } from "~/client/components/file-browsers/file-browser";
 import { useFileBrowser, type FetchFolderResult } from "~/client/hooks/use-file-browser";
 import { parseError } from "~/client/lib/errors";
+import { logger } from "~/client/lib/logger";
 
 type VolumeFileBrowserProps = FileBrowserUiProps & {
 	volumeId: string;
@@ -29,12 +30,14 @@ export const VolumeFileBrowser = ({ volumeId, enabled = true, ...uiProps }: Volu
 			);
 		},
 		prefetchFolder: (path) => {
-			void queryClient.prefetchQuery(
-				listFilesOptions({
-					path: { shortId: volumeId },
-					query: { path },
-				}),
-			);
+			void queryClient
+				.prefetchQuery(
+					listFilesOptions({
+						path: { shortId: volumeId },
+						query: { path },
+					}),
+				)
+				.catch((e) => logger.error(e));
 		},
 	});
 
diff --git a/app/client/components/file-tree.tsx b/app/client/components/file-tree.tsx
index d9342f73..58e18b82 100644
--- a/app/client/components/file-tree.tsx
+++ b/app/client/components/file-tree.tsx
@@ -581,8 +581,10 @@ const NodeButton = memo(({ depth, icon, onClick, onMouseEnter, className, childr
 	);
 
 	return (
-		<button
-			type="button"
+		<div
+			// oxlint-disable-next-line jsx_a11y/prefer-tag-over-role
+			role="button"
+			tabIndex={0}
 			className={cn("flex items-center gap-2 w-full pr-2 text-sm py-1.5 text-left", className)}
 			style={{ paddingLeft }}
 			onClick={onClick}
@@ -591,7 +593,7 @@ const NodeButton = memo(({ depth, icon, onClick, onMouseEnter, className, childr
 		>
 			{icon}
 			<div className="truncate w-full flex items-center gap-2">{children}</div>
-		</button>
+		</div>
 	);
 });
 
diff --git a/app/client/components/release-notes-dialog.tsx b/app/client/components/release-notes-dialog.tsx
index f4f77f80..77ea9289 100644
--- a/app/client/components/release-notes-dialog.tsx
+++ b/app/client/components/release-notes-dialog.tsx
@@ -2,7 +2,7 @@ import ReactMarkdown from "react-markdown";
 import remarkGfm from "remark-gfm";
 import { Dialog, DialogContent, DialogDescription, DialogHeader, DialogTitle } from "~/client/components/ui/dialog";
 import { ScrollArea } from "~/client/components/ui/scroll-area";
-import { formatDate } from "~/client/lib/datetime";
+import { useTimeFormat } from "~/client/lib/datetime";
 import type { UpdateInfoDto } from "~/server/modules/system/system.dto";
 
 interface ReleaseNotesDialogProps {
@@ -12,6 +12,8 @@ interface ReleaseNotesDialogProps {
 }
 
 export function ReleaseNotesDialog({ open, onOpenChange, updates }: ReleaseNotesDialogProps) {
+	const { formatDate } = useTimeFormat();
+
 	if (!updates) return null;
 
 	return (
diff --git a/app/client/components/snapshots-table.tsx b/app/client/components/snapshots-table.tsx
index 275a8a79..56bb00c9 100644
--- a/app/client/components/snapshots-table.tsx
+++ b/app/client/components/snapshots-table.tsx
@@ -25,8 +25,8 @@ import {
 	DialogTitle,
 } from "~/client/components/ui/dialog";
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "~/client/components/ui/select";
+import { useTimeFormat } from "~/client/lib/datetime";
 import { formatDuration } from "~/utils/utils";
-import { formatDateTime } from "~/client/lib/datetime";
 import {
 	deleteSnapshotsMutation,
 	listSnapshotsQueryKey,
@@ -49,6 +49,7 @@ type Props = {
 export const SnapshotsTable = ({ snapshots, repositoryId, backups, listSnapshotsQueryOptions }: Props) => {
 	const queryClient = useQueryClient();
 	const navigate = useNavigate();
+	const { formatDateTime } = useTimeFormat();
 
 	const [selectedIds, setSelectedIds] = useState<Set<string>>(new Set());
 	const [showBulkDeleteConfirm, setShowBulkDeleteConfirm] = useState(false);
diff --git a/app/client/components/time-ago.tsx b/app/client/components/time-ago.tsx
new file mode 100644
index 00000000..94c93a74
--- /dev/null
+++ b/app/client/components/time-ago.tsx
@@ -0,0 +1,12 @@
+import { useTimeFormat, type DateInput } from "~/client/lib/datetime";
+
+type Props = {
+	date: DateInput;
+	className?: string;
+};
+
+export function TimeAgo({ date, className }: Props) {
+	const { formatTimeAgo } = useTimeFormat();
+
+	return <span className={className}>{formatTimeAgo(date)}</span>;
+}
diff --git a/app/client/lib/__tests__/datetime.test.ts b/app/client/lib/__tests__/datetime.test.ts
index 4e2475f4..544a9aeb 100644
--- a/app/client/lib/__tests__/datetime.test.ts
+++ b/app/client/lib/__tests__/datetime.test.ts
@@ -60,4 +60,8 @@ describe("datetime formatters", () => {
 
 		nowSpy.mockRestore();
 	});
+
+	test("formats calendar values with an explicit locale and timezone", () => {
+		expect(formatShortDateTime(sampleDate, { locale: "en-US", timeZone: "UTC" })).toBe("1/10, 2:30 PM");
+	});
 });
diff --git a/app/client/lib/datetime.ts b/app/client/lib/datetime.ts
index 587544ad..2a7ada92 100644
--- a/app/client/lib/datetime.ts
+++ b/app/client/lib/datetime.ts
@@ -1,8 +1,13 @@
 import { formatDistanceToNow, isValid } from "date-fns";
+import { useMemo } from "react";
+import { Route as RootRoute } from "~/routes/__root";
 
-type DateInput = Date | string | number | null | undefined;
+export type DateInput = Date | string | number | null | undefined;
 
-const getLocales = () => (typeof navigator !== "undefined" ? navigator.languages : undefined);
+type DateFormatOptions = {
+	locale?: string | string[];
+	timeZone?: string;
+};
 
 function formatValidDate(date: DateInput, formatter: (date: Date) => string): string {
 	if (!date) return "Never";
@@ -13,10 +18,21 @@ function formatValidDate(date: DateInput, formatter: (date: Date) => string): st
 	return formatter(parsedDate);
 }
 
+function getDateTimeFormat(
+	locale: DateFormatOptions["locale"],
+	timeZone: DateFormatOptions["timeZone"],
+	options: Intl.DateTimeFormatOptions,
+) {
+	return Intl.DateTimeFormat(locale, {
+		...options,
+		timeZone,
+	});
+}
+
 // 1/10/2026, 2:30 PM
-export function formatDateTime(date: DateInput): string {
+export function formatDateTime(date: DateInput, options: DateFormatOptions = {}): string {
 	return formatValidDate(date, (validDate) =>
-		Intl.DateTimeFormat(getLocales(), {
+		getDateTimeFormat(options.locale, options.timeZone, {
 			month: "numeric",
 			day: "numeric",
 			year: "numeric",
@@ -27,9 +43,9 @@ export function formatDateTime(date: DateInput): string {
 }
 
 // Jan 10, 2026
-export function formatDateWithMonth(date: DateInput): string {
+export function formatDateWithMonth(date: DateInput, options: DateFormatOptions = {}): string {
 	return formatValidDate(date, (validDate) =>
-		Intl.DateTimeFormat(getLocales(), {
+		getDateTimeFormat(options.locale, options.timeZone, {
 			month: "short",
 			day: "numeric",
 			year: "numeric",
@@ -38,9 +54,9 @@ export function formatDateWithMonth(date: DateInput): string {
 }
 
 // 1/10/2026
-export function formatDate(date: DateInput): string {
+export function formatDate(date: DateInput, options: DateFormatOptions = {}): string {
 	return formatValidDate(date, (validDate) =>
-		Intl.DateTimeFormat(getLocales(), {
+		getDateTimeFormat(options.locale, options.timeZone, {
 			month: "numeric",
 			day: "numeric",
 			year: "numeric",
@@ -49,9 +65,9 @@ export function formatDate(date: DateInput): string {
 }
 
 // 1/10
-export function formatShortDate(date: DateInput): string {
+export function formatShortDate(date: DateInput, options: DateFormatOptions = {}): string {
 	return formatValidDate(date, (validDate) =>
-		Intl.DateTimeFormat(getLocales(), {
+		getDateTimeFormat(options.locale, options.timeZone, {
 			month: "numeric",
 			day: "numeric",
 		}).format(validDate),
@@ -59,9 +75,9 @@ export function formatShortDate(date: DateInput): string {
 }
 
 // 1/10, 2:30 PM
-export function formatShortDateTime(date: DateInput): string {
+export function formatShortDateTime(date: DateInput, options: DateFormatOptions = {}): string {
 	return formatValidDate(date, (validDate) =>
-		Intl.DateTimeFormat(getLocales(), {
+		getDateTimeFormat(options.locale, options.timeZone, {
 			month: "numeric",
 			day: "numeric",
 			hour: "numeric",
@@ -71,9 +87,9 @@ export function formatShortDateTime(date: DateInput): string {
 }
 
 // 2:30 PM
-export function formatTime(date: DateInput): string {
+export function formatTime(date: DateInput, options: DateFormatOptions = {}): string {
 	return formatValidDate(date, (validDate) =>
-		Intl.DateTimeFormat(getLocales(), {
+		getDateTimeFormat(options.locale, options.timeZone, {
 			hour: "numeric",
 			minute: "numeric",
 		}).format(validDate),
@@ -91,3 +107,20 @@ export function formatTimeAgo(date: DateInput): string {
 		return timeAgo.replace("about ", "").replace("over ", "").replace("almost ", "").replace("less than ", "");
 	});
 }
+
+export function useTimeFormat() {
+	const { locale, timeZone } = RootRoute.useLoaderData();
+
+	return useMemo(
+		() => ({
+			formatDateTime: (date: DateInput) => formatDateTime(date, { locale, timeZone }),
+			formatDateWithMonth: (date: DateInput) => formatDateWithMonth(date, { locale, timeZone }),
+			formatDate: (date: DateInput) => formatDate(date, { locale, timeZone }),
+			formatShortDate: (date: DateInput) => formatShortDate(date, { locale, timeZone }),
+			formatShortDateTime: (date: DateInput) => formatShortDateTime(date, { locale, timeZone }),
+			formatTime: (date: DateInput) => formatTime(date, { locale, timeZone }),
+			formatTimeAgo,
+		}),
+		[locale, timeZone],
+	);
+}
diff --git a/app/client/modules/backups/components/backup-card.tsx b/app/client/modules/backups/components/backup-card.tsx
index 9b8eec13..49b7db63 100644
--- a/app/client/modules/backups/components/backup-card.tsx
+++ b/app/client/modules/backups/components/backup-card.tsx
@@ -1,11 +1,14 @@
 import { CalendarClock, Database, HardDrive } from "lucide-react";
+import { Link } from "@tanstack/react-router";
+import { TimeAgo } from "~/client/components/time-ago";
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "~/client/components/ui/card";
+import { useTimeFormat } from "~/client/lib/datetime";
 import type { BackupSchedule } from "~/client/lib/types";
 import { BackupStatusDot } from "./backup-status-dot";
-import { formatShortDateTime, formatTimeAgo } from "~/client/lib/datetime";
-import { Link } from "@tanstack/react-router";
 
 export const BackupCard = ({ schedule }: { schedule: BackupSchedule }) => {
+	const { formatShortDateTime } = useTimeFormat();
+
 	return (
 		<Link key={schedule.shortId} to="/backups/$backupId" params={{ backupId: schedule.shortId }}>
 			<Card interactive key={schedule.shortId} className="flex flex-col h-full">
@@ -42,7 +45,7 @@ export const BackupCard = ({ schedule }: { schedule: BackupSchedule }) => {
 						<div className="flex items-center text-sm gap-2">
 							<span className="text-muted-foreground shrink-0">Last backup</span>
 							<div className="flex-1 border-b border-dashed border-border/80 dark:border-border/50" />
-							<span className="text-foreground font-mono text-sm shrink-0">{formatTimeAgo(schedule.lastBackupAt)}</span>
+							<TimeAgo date={schedule.lastBackupAt} className="text-foreground font-mono text-sm shrink-0" />
 						</div>
 						<div className="flex items-center text-sm gap-2">
 							<span className="text-muted-foreground shrink-0">Next backup</span>
diff --git a/app/client/modules/backups/components/schedule-summary.tsx b/app/client/modules/backups/components/schedule-summary.tsx
index 089b6c5f..dec510d5 100644
--- a/app/client/modules/backups/components/schedule-summary.tsx
+++ b/app/client/modules/backups/components/schedule-summary.tsx
@@ -16,11 +16,12 @@ import type { BackupSchedule } from "~/client/lib/types";
 import { BackupProgressCard } from "./backup-progress-card";
 import { getBackupProgressOptions, runForgetMutation } from "~/client/api-client/@tanstack/react-query.gen";
 import { useMutation, useSuspenseQuery } from "@tanstack/react-query";
+import { Link } from "@tanstack/react-router";
 import { toast } from "sonner";
 import { handleRepositoryError } from "~/client/lib/errors";
-import { formatShortDateTime, formatTimeAgo } from "~/client/lib/datetime";
-import { Link } from "@tanstack/react-router";
 import { Collapsible, CollapsibleContent, CollapsibleTrigger } from "~/client/components/ui/collapsible";
+import { TimeAgo } from "~/client/components/time-ago";
+import { useTimeFormat } from "~/client/lib/datetime";
 import { cn } from "~/client/lib/utils";
 
 type Props = {
@@ -35,6 +36,7 @@ type Props = {
 export const ScheduleSummary = (props: Props) => {
 	const { schedule, handleToggleEnabled, handleRunBackupNow, handleStopBackup, handleDeleteSchedule, setIsEditMode } =
 		props;
+	const { formatShortDateTime } = useTimeFormat();
 	const [showDeleteConfirm, setShowDeleteConfirm] = useState(false);
 	const [showForgetConfirm, setShowForgetConfirm] = useState(false);
 	const [showStopConfirm, setShowStopConfirm] = useState(false);
@@ -182,7 +184,7 @@ export const ScheduleSummary = (props: Props) => {
 					</div>
 					<div>
 						<p className="text-xs uppercase text-muted-foreground">Last backup</p>
-						<p className="font-medium">{formatTimeAgo(schedule.lastBackupAt)}</p>
+						<TimeAgo date={schedule.lastBackupAt} className="font-medium" />
 					</div>
 					<div>
 						<p className="text-xs uppercase text-muted-foreground">Next backup</p>
diff --git a/app/client/modules/backups/components/snapshot-file-browser.tsx b/app/client/modules/backups/components/snapshot-file-browser.tsx
index 3bdda3aa..bbe28f8b 100644
--- a/app/client/modules/backups/components/snapshot-file-browser.tsx
+++ b/app/client/modules/backups/components/snapshot-file-browser.tsx
@@ -3,7 +3,7 @@ import { useQuery } from "@tanstack/react-query";
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "~/client/components/ui/card";
 import { Button, buttonVariants } from "~/client/components/ui/button";
 import type { Snapshot } from "~/client/lib/types";
-import { formatDateTime } from "~/client/lib/datetime";
+import { useTimeFormat } from "~/client/lib/datetime";
 import { cn } from "~/client/lib/utils";
 import { Link } from "@tanstack/react-router";
 import { SnapshotTreeBrowser } from "~/client/components/file-browsers/snapshot-tree-browser";
@@ -62,6 +62,7 @@ const TreeBrowserFallback = () => (
 
 export const SnapshotFileBrowser = (props: Props) => {
 	const { snapshot, repositoryId, backupId, basePath, onDeleteSnapshot, isDeletingSnapshot } = props;
+	const { formatDateTime } = useTimeFormat();
 
 	const scheduleShortId = !basePath ? backupId || snapshot.tags?.[0] : undefined;
 
diff --git a/app/client/modules/backups/components/snapshot-timeline.tsx b/app/client/modules/backups/components/snapshot-timeline.tsx
index 40489e56..5b74b37d 100644
--- a/app/client/modules/backups/components/snapshot-timeline.tsx
+++ b/app/client/modules/backups/components/snapshot-timeline.tsx
@@ -4,7 +4,7 @@ import type { ListSnapshotsResponse } from "~/client/api-client";
 import { ByteSize } from "~/client/components/bytes-size";
 import { Card, CardContent } from "~/client/components/ui/card";
 import { Button } from "~/client/components/ui/button";
-import { formatDateWithMonth, formatShortDate, formatTime } from "~/client/lib/datetime";
+import { useTimeFormat } from "~/client/lib/datetime";
 import { cn } from "~/client/lib/utils";
 import { RetentionCategoryBadges } from "~/client/components/retention-category-badges";
 
@@ -45,6 +45,7 @@ interface Props {
 export const SnapshotTimeline = (props: Props) => {
 	const { snapshots, snapshotId, loading, onSnapshotSelect, error, initialSortOrder = "asc" } = props;
 	const selectedRef = useRef<HTMLButtonElement>(null);
+	const { formatDateWithMonth, formatShortDate, formatTime } = useTimeFormat();
 	const [sortOrder, setSortOrder] = useState<SnapshotTimelineSortOrder>(initialSortOrder);
 	const sortedSnapshots = useMemo(() => getSortedSnapshots(snapshots, sortOrder), [snapshots, sortOrder]);
 	const snapshotRange = useMemo(() => getSnapshotRange(snapshots), [snapshots]);
diff --git a/app/client/modules/repositories/components/doctor-report.tsx b/app/client/modules/repositories/components/doctor-report.tsx
index 3cb9e7a5..1c2dde65 100644
--- a/app/client/modules/repositories/components/doctor-report.tsx
+++ b/app/client/modules/repositories/components/doctor-report.tsx
@@ -1,6 +1,6 @@
 import { AlertCircle, CheckCircle2 } from "lucide-react";
 import { Collapsible, CollapsibleContent, CollapsibleTrigger } from "~/client/components/ui/collapsible";
-import { formatDateTime } from "~/client/lib/datetime";
+import { useTimeFormat } from "~/client/lib/datetime";
 import { cn, safeJsonParse } from "~/client/lib/utils";
 import { Card, CardTitle } from "~/client/components/ui/card";
 
@@ -23,6 +23,8 @@ type Props = {
 };
 
 export const DoctorReport = ({ result, repositoryStatus }: Props) => {
+	const { formatDateTime } = useTimeFormat();
+
 	return (
 		<Card className="px-6 py-6 flex flex-col gap-4 h-full">
 			<div className="flex items-center justify-between">
diff --git a/app/client/modules/repositories/routes/snapshot-details.tsx b/app/client/modules/repositories/routes/snapshot-details.tsx
index 1d1d14c5..43a6f301 100644
--- a/app/client/modules/repositories/routes/snapshot-details.tsx
+++ b/app/client/modules/repositories/routes/snapshot-details.tsx
@@ -8,7 +8,7 @@ import type { GetSnapshotDetailsResponse } from "~/client/api-client/types.gen";
 import { Button } from "~/client/components/ui/button";
 import { Card, CardContent, CardHeader, CardTitle } from "~/client/components/ui/card";
 import { SnapshotFileBrowser } from "~/client/modules/backups/components/snapshot-file-browser";
-import { formatDateTime } from "~/client/lib/datetime";
+import { useTimeFormat } from "~/client/lib/datetime";
 import { BackupSummaryCard } from "~/client/components/backup-summary-card";
 import { useState } from "react";
 import { Database } from "lucide-react";
@@ -58,6 +58,7 @@ type Props = {
 
 export function SnapshotDetailsPage({ repositoryId, snapshotId, initialSnapshot }: Props) {
 	const [showAllPaths, setShowAllPaths] = useState(false);
+	const { formatDateTime } = useTimeFormat();
 
 	const { data: repository } = useSuspenseQuery({
 		...getRepositoryOptions({ path: { shortId: repositoryId } }),
diff --git a/app/client/modules/repositories/tabs/info.tsx b/app/client/modules/repositories/tabs/info.tsx
index 6b73e69b..fdaae655 100644
--- a/app/client/modules/repositories/tabs/info.tsx
+++ b/app/client/modules/repositories/tabs/info.tsx
@@ -15,7 +15,6 @@ import {
 } from "~/client/components/ui/alert-dialog";
 import type { Repository } from "~/client/lib/types";
 import type { GetRepositoryStatsResponse } from "~/client/api-client/types.gen";
-import { formatDateTime, formatTimeAgo } from "~/client/lib/datetime";
 import {
 	cancelDoctorMutation,
 	deleteRepositoryMutation,
@@ -23,6 +22,8 @@ import {
 	unlockRepositoryMutation,
 } from "~/client/api-client/@tanstack/react-query.gen";
 import type { RepositoryConfig } from "@zerobyte/core/restic";
+import { TimeAgo } from "~/client/components/time-ago";
+import { useTimeFormat } from "~/client/lib/datetime";
 import { DoctorReport } from "../components/doctor-report";
 import { parseError } from "~/client/lib/errors";
 import { useNavigate } from "@tanstack/react-router";
@@ -41,6 +42,7 @@ const getEffectiveLocalPath = (repository: Repository): string | null => {
 };
 
 export const RepositoryInfoTabContent = ({ repository, initialStats }: Props) => {
+	const { formatDateTime } = useTimeFormat();
 	const [showDeleteConfirm, setShowDeleteConfirm] = useState(false);
 	const navigate = useNavigate();
 
@@ -206,7 +208,7 @@ export const RepositoryInfoTabContent = ({ repository, initialStats }: Props) =>
 								</div>
 								<div className="flex flex-col gap-1">
 									<div className="text-sm font-medium text-muted-foreground">Last Checked</div>
-									<p className="text-sm">{formatTimeAgo(repository.lastChecked)}</p>
+									<TimeAgo date={repository.lastChecked} className="text-sm" />
 								</div>
 								{hasLocalPath && (
 									<div className="flex flex-col gap-1 @medium:col-span-2">
diff --git a/app/client/modules/sso/components/sso-settings-section.tsx b/app/client/modules/sso/components/sso-settings-section.tsx
index 6b5adcad..ca424247 100644
--- a/app/client/modules/sso/components/sso-settings-section.tsx
+++ b/app/client/modules/sso/components/sso-settings-section.tsx
@@ -29,7 +29,7 @@ import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "~
 import { Switch } from "~/client/components/ui/switch";
 import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from "~/client/components/ui/table";
 import { useOrganizationContext } from "~/client/hooks/use-org-context";
-import { formatDateWithMonth } from "~/client/lib/datetime";
+import { useTimeFormat } from "~/client/lib/datetime";
 import { getOrigin } from "~/client/functions/get-origin";
 import { authClient } from "~/client/lib/auth-client";
 import { cn } from "~/client/lib/utils";
@@ -47,6 +47,7 @@ export function SsoSettingsSection({ initialSettings, initialOrigin }: Props) {
 	const { data } = useSuspenseQuery({ queryKey: ["app-origin"], queryFn: originQuery, initialData: initialOrigin });
 
 	const navigate = useNavigate();
+	const { formatDateWithMonth } = useTimeFormat();
 	const { activeOrganization } = useOrganizationContext();
 	const [inviteEmail, setInviteEmail] = useState("");
 	const [inviteRole, setInviteRole] = useState<InvitationRole>("member");
diff --git a/app/client/modules/volumes/components/healthchecks-card.tsx b/app/client/modules/volumes/components/healthchecks-card.tsx
index 36ead717..de3f6ad2 100644
--- a/app/client/modules/volumes/components/healthchecks-card.tsx
+++ b/app/client/modules/volumes/components/healthchecks-card.tsx
@@ -5,8 +5,8 @@ import { healthCheckVolumeMutation, updateVolumeMutation } from "~/client/api-cl
 import { OnOff } from "~/client/components/onoff";
 import { Button } from "~/client/components/ui/button";
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "~/client/components/ui/card";
-import { formatTimeAgo } from "~/client/lib/datetime";
 import type { Volume } from "~/client/lib/types";
+import { TimeAgo } from "~/client/components/time-ago";
 
 type Props = {
 	volume: Volume;
@@ -53,9 +53,11 @@ export const HealthchecksCard = ({ volume }: Props) => {
 					{volume.lastError && <span className="text-sm text-red-500 wrap-break-word">{volume.lastError}</span>}
 					{volume.status === "mounted" && <span className="text-md text-success">Healthy</span>}
 					{volume.status !== "unmounted" && (
-						<span className="text-xs text-muted-foreground mb-4">Checked {formatTimeAgo(volume.lastHealthCheck)}</span>
+						<span className="text-xs text-muted-foreground mb-4">
+							Checked <TimeAgo date={volume.lastHealthCheck} />
+						</span>
 					)}
-					<span className="flex justify-between items-center gap-2">
+					<div className="flex justify-between items-center gap-2">
 						<span className="text-sm">Remount on error</span>
 						<OnOff
 							isOn={volume.autoRemount}
@@ -69,7 +71,7 @@ export const HealthchecksCard = ({ volume }: Props) => {
 							enabledLabel="Enabled"
 							disabledLabel="Paused"
 						/>
-					</span>
+					</div>
 				</div>
 				{volume.status !== "unmounted" && (
 					<div className="flex justify-center">
diff --git a/app/client/modules/volumes/tabs/info.tsx b/app/client/modules/volumes/tabs/info.tsx
index b6bebcc1..d01dd98e 100644
--- a/app/client/modules/volumes/tabs/info.tsx
+++ b/app/client/modules/volumes/tabs/info.tsx
@@ -81,9 +81,9 @@ export const VolumeInfoTabContent = ({ volume, statfs }: Props) => {
 
 	const deleteVol = useMutation({
 		...deleteVolumeMutation(),
-		onSuccess: () => {
+		onSuccess: async () => {
 			toast.success("Volume deleted successfully");
-			void navigate({ to: "/volumes" });
+			await navigate({ to: "/volumes" });
 		},
 		onError: (error) => {
 			toast.error("Failed to delete volume", {
diff --git a/app/routes/__root.tsx b/app/routes/__root.tsx
index 7938de8c..d95d4cdb 100644
--- a/app/routes/__root.tsx
+++ b/app/routes/__root.tsx
@@ -8,7 +8,7 @@ import { useServerEvents } from "~/client/hooks/use-server-events";
 import { useEffect } from "react";
 import { ThemeProvider, THEME_COOKIE_NAME } from "~/client/components/theme-provider";
 import { createServerFn } from "@tanstack/react-start";
-import { getCookie } from "@tanstack/react-start/server";
+import { getCookie, getRequestHeaders } from "@tanstack/react-start/server";
 import { isAuthRoute } from "~/lib/auth-routes";
 
 const fetchTheme = createServerFn({ method: "GET" }).handler(async () => {
@@ -16,13 +16,22 @@ const fetchTheme = createServerFn({ method: "GET" }).handler(async () => {
 	return (themeCookie === "light" ? "light" : "dark") as "light" | "dark";
 });
 
+const fetchTimeConfig = createServerFn({ method: "GET" }).handler(async () => {
+	const acceptLanguage = getRequestHeaders().get("accept-language");
+
+	return {
+		locale: (acceptLanguage?.split(",")[0] || "en-US") as string,
+		timeZone: process.env.TZ || Intl.DateTimeFormat().resolvedOptions().timeZone || "UTC",
+	};
+});
+
 export const Route = createRootRouteWithContext<{ queryClient: QueryClient }>()({
 	server: {
 		middleware: [apiClientMiddleware],
 	},
 	loader: async () => {
-		const theme = await fetchTheme();
-		return { theme };
+		const [theme, timeConfig] = await Promise.all([fetchTheme(), fetchTimeConfig()]);
+		return { theme, ...timeConfig };
 	},
 	head: () => ({
 		meta: [{ title: "Zerobyte - Open Source Backup Solution" }],