Handle time strings with timezone suffix
diff --git a/parsemail_test.go b/parsemail_test.go
index 809aad8..9d6e4d3 100644
--- a/parsemail_test.go
+++ b/parsemail_test.go
@@ -597,7 +597,7 @@
var rfc5322exampleA12 = `From: "Joe Q. Public" <john.q.public@example.com>
To: Mary Smith <mary@x.test>, jdoe@example.org, Who? <one@y.test>
Cc: <boss@nil.test>, "Giant; \"Big\" Box" <sysservices@example.net>
-Date: Tue, 1 Jul 2003 10:52:37 +0200
+Date: Tue, 1 Jul 2003 10:52:37 +0200 (GMT)
Message-ID: <5678.21-Nov-1997@example.com>
Hi everyone.