src/share/classes/sun/text/resources/pt/FormatData_pt.java

@@ -102,10 +102,21 @@
                     "Qui", // abb Thursday
                     "Sex", // abb Friday
                     "S\u00e1b" // abb Saturday
                 }
             },
+            { "DayNarrows",
+                new String[] {
+                    "D",
+                    "S",
+                    "T",
+                    "Q",
+                    "Q",
+                    "S",
+                    "S",
+                }
+            },
             { "NumberElements",
                 new String[] {
                     ",", // decimal al separator
                     ".", // group (thousands) separator
                     ";", // list separator