Unable to parse "CET" from formatted DateString - flutter

Question

Why the DateFormat Parser cant parse CET?
final String dateString = "Sat Jul 05 00:00:00 CET 1975";
final DateTime dateTime =
DateFormat("EEE MMM dd HH:mm:ss vvv yyyy").parse(dateString);
Results in
FormatException: Trying to read from Sat Jul 05 00:00:00 CET 1975 at position 21
Position 21 would be "C" if I count right.
Anybody had this problem before?

Answer 1

intl package didn't implement parsing time zones yet, as evident in date_format_field class :
case 'v':
return formatTimeZoneId(date);
case 'z':
return formatTimeZone(date);
case 'Z':
return formatTimeZoneRFC(date);
And when you look at these functions implementation :
String formatTimeZoneId(DateTime date) {
// TODO(alanknight): implement time zone support
throw new UnimplementedError();
}
String formatTimeZone(DateTime date) {
throw new UnimplementedError();
}
String formatTimeZoneRFC(DateTime date) {
throw new UnimplementedError();
}
This issue has been open since 2015, and this is the response of one of the people responsible for it :
We don't expect to implement those until Dart DateTime's have time zone information, and that's not planned. I wouldn't expect it unless/until JavaScript DateTime's have them. Including localized TimeZone names is a lot of data. We should probably just remove those APIs until such time as we actually provide them.