src/share/classes/sun/text/resources/bg/FormatData_bg.java

@@ -105,10 +105,21 @@
                     "\u0427\u0442", // abb Thursday
                     "\u041f\u0442", // abb Friday
                     "\u0421\u0431" // abb Saturday
                 }
             },
+            { "DayNarrows",
+                new String[] {
+                    "\u043d",
+                    "\u043f",
+                    "\u0432",
+                    "\u0441",
+                    "\u0447",
+                    "\u043f",
+                    "\u0441",
+                }
+            },
             { "Eras",
                 new String[] { // era strings
                     "\u043f\u0440.\u043d.\u0435.",
                     "\u043d.\u0435."
                 }