diff --git a/angular-material/angular-material.d.ts b/angular-material/angular-material.d.ts
index ee932f0218..a263c951ff 100644
--- a/angular-material/angular-material.d.ts
+++ b/angular-material/angular-material.d.ts
@@ -221,4 +221,19 @@ declare module angular.material {
         setDefaultTheme(theme: string): void;
         alwaysWatchTheme(alwaysWatch: boolean): void;
     }
+    
+    interface IDateLocaleProvider {
+        month: string[];
+        shortMonths: string[];
+        days: string[];
+        shortDays: string[];
+        dates: string[];
+        firstDayOfWeek: number;
+        parseDate(dateString: string): Date;
+        formatDate(date: Date): string;
+        monthHeaderFormatter(date: Date): string;
+        weekNumberFormatter(weekNumber: number): string;
+        msgCalendar: string;
+        msgOpenCalendar: string;
+    }
 }