Fix llms.txt event times: format in America/Asuncion timezone

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/app/llms.txt/route.ts

@@ -51,12 +51,17 @@ async function getUpcomingEvents(): Promise<LlmsEvent[]> {
   }
 }
 
+// Event times are always shown in Paraguay time (America/Asuncion) so llms.txt
+// matches what users see on the website, regardless of server timezone.
+const EVENT_TIMEZONE = 'America/Asuncion';
+
 function formatEventDate(dateStr: string): string {
   return new Date(dateStr).toLocaleDateString('en-US', {
     weekday: 'long',
     year: 'numeric',
     month: 'long',
     day: 'numeric',
+    timeZone: EVENT_TIMEZONE,
   });
 }
 
@@ -65,6 +70,7 @@ function formatEventTime(dateStr: string): string {
     hour: '2-digit',
     minute: '2-digit',
     hour12: true,
+    timeZone: EVENT_TIMEZONE,
   });
 }