Adjusted context to hopefully reflect accurate timezones relative to browser.

src/components/DeviceListSidebar.tsx

@@ -32,14 +32,24 @@ const ONLINE_THRESHOLD_MINUTES = 1440;
 
 
 function getStatusColor(lastCheckedIn: string) {
-  const lastSeen = parseISO(lastCheckedIn);
+  // Parse UTC timestamp and treat it correctly as UTC
+  const lastSeen = new Date(lastCheckedIn + 'Z'); // Add Z to indicate UTC
   const minutesAgo = (Date.now() - lastSeen.getTime()) / 1000 / 60;
   return minutesAgo < ONLINE_THRESHOLD_MINUTES ? 'green' : 'grey';
 }
 
 function formatRelativeTime(lastCheckedIn: string) {
   try {
-    return formatDistanceToNowStrict(parseISO(lastCheckedIn), { addSuffix: true });
+    // Parse UTC timestamp and treat it correctly as UTC
+    const lastSeen = new Date(lastCheckedIn + 'Z'); // Add Z to indicate UTC
+
+    // Debug: Log what we're getting vs what we should get
+    //const wrongWay = new Date(lastCheckedIn); // Without Z - treats as local
+    //console.log(`🕒 DEBUG: "${lastCheckedIn}"`);
+    //console.log(`🕒 Wrong way (as local): ${wrongWay.toLocaleString()} -> ${formatDistanceToNowStrict(wrongWay, { addSuffix: true })}`);
+    //console.log(`🕒 Right way (as UTC): ${lastSeen.toLocaleString()} -> ${formatDistanceToNowStrict(lastSeen, { addSuffix: true })}`);
+
+    return formatDistanceToNowStrict(lastSeen, { addSuffix: true });
   } catch {
     return 'Unknown';
   }
@@ -56,7 +66,7 @@ const DeviceListSidebar: React.FC<DeviceListSidebarProps> = ({
   onTogglePin,
 }) => {
   const [sortAsc, setSortAsc] = React.useState(true);
-  const [searchQuery, setSearchQuery] = React.useState('');  
+  const [searchQuery, setSearchQuery] = React.useState('');
   
   
   

src/components/admin/DeviceTableSection.tsx

@@ -81,11 +81,12 @@ export default function DeviceTableSection({ initialDevices }: Props) {
 
 
   const formatLastCheckedIn = (isoString: string): string => {
-    const date = new Date(isoString);
+    // Parse as UTC by adding 'Z' if not present
+    const date = new Date(isoString + (isoString.includes('Z') || isoString.includes('+') ? '' : 'Z'));
     const now = new Date();
     const diffMs = now.getTime() - date.getTime();
     const diffHours = Math.floor(diffMs / (1000 * 60 * 60));
-  
+
     const formatted = date.toLocaleString('en-AU', {
       day: '2-digit',
       month: '2-digit',
@@ -94,7 +95,7 @@ export default function DeviceTableSection({ initialDevices }: Props) {
       minute: '2-digit',
       hour12: true,
     });
-  
+
     return `${formatted} (${diffHours} hours ago)`;
   };
   

src/components/client/DevicesClient.tsx

@@ -127,7 +127,16 @@ export default function DevicesClient() {
 
   const formatBootTime = (timestamp: string) => {
     try {
-      const parsed = parseISO(timestamp);
+      // Handle timestamp - could be UTC or already have timezone info
+      let parsed: Date;
+      if (timestamp.includes('+') || timestamp.endsWith('Z')) {
+        // Already has timezone info, parse directly
+        parsed = new Date(timestamp);
+      } else {
+        // Assume UTC, add Z to indicate UTC
+        parsed = new Date(timestamp + 'Z');
+      }
+
       const formattedDate = format(parsed, 'EEEE do MMMM yyyy');
       const relative = formatDistanceToNowStrict(parsed, { addSuffix: true });
       return `${formattedDate} (${relative})`;

src/context/DeviceContext.tsx

@@ -7,6 +7,13 @@ import { DetailedDevice } from '@/types/devices';
 import { disableConsoleInProd } from '@/lib/disableConsole';
 disableConsoleInProd();
 
+// Helper function to convert UTC timestamps to local time
+const convertUtcToLocal = (utcString: string | null): string | null => {
+  if (!utcString) return null;
+  // Add 'Z' to indicate it's UTC, then convert to local time
+  return new Date(utcString + 'Z').toLocaleString();
+};
+
 
 
 interface DriveInfo {
@@ -125,7 +132,7 @@ export const DeviceProvider = ({
         console.log('✅ Software fetched:', softwareRes.data);
         console.groupEnd();
     
-        // STEP 1: Set basic data
+        // STEP 1: Set basic data (keep original UTC timestamps for calculations)
         setDevices(devicesRes.data.devices);
         setDeviceVulns(devicesRes.data.vulnerabilitiesByDevice);
         setCachedSoftware(softwareRes.data);