Improve error handling and parsing a little

lib/utils.dart

@@ -27,21 +27,8 @@ DateTime parseRfc822Date(String date) {
   final minute = int.parse(timeParts[1]);
   final second = int.parse(timeParts[2]);
 
-  // Handle the timezone offset
-  final timezone = parts[5];
-  final isNegative = timezone.startsWith('-');
-  final tzHours = int.parse(timezone.substring(1, 3));
-  final tzMinutes = int.parse(timezone.substring(3, 5));
-
   // Create the DateTime object
   DateTime dateTime = DateTime(year, month, day, hour, minute, second);
 
-  // Adjust for timezone
-  if (isNegative) {
-    dateTime = dateTime.subtract(Duration(hours: tzHours, minutes: tzMinutes));
-  } else {
-    dateTime = dateTime.add(Duration(hours: tzHours, minutes: tzMinutes));
-  }
-
   return dateTime;
 }