diff --git a/node-calendar/node-calendar-tests.ts b/node-calendar/node-calendar-tests.ts
index 5a4a40a46..6de5d6cc4 100644
--- a/node-calendar/node-calendar-tests.ts
+++ b/node-calendar/node-calendar-tests.ts
@@ -1,5 +1,4 @@
 /// <reference path="node-calendar" />
-/// <reference path="../node/node" />
 
 import node_calendar = require('node-calendar');
 
@@ -97,7 +96,7 @@ function assertIsNumber(n: number) {
 	assert(typeof n == 'number', 'Should be a number');
 }
 
-function assertDayOfWeekMonth(d: IDayOfWeekMonth) {
+function assertDayOfWeekMonth(d: [number, number]) {
 	assert(d instanceof Array, 'Day of weak/month should be an array');
 	assert(d.length == 2, 'Day of weak/month array should contain 2 items');
 	assert(typeof d[0] == 'number', 'Day of month should be a number');
diff --git a/node-calendar/node-calendar.d.ts b/node-calendar/node-calendar.d.ts
index a1c3f0500..3839d6541 100755
--- a/node-calendar/node-calendar.d.ts
+++ b/node-calendar/node-calendar.d.ts
@@ -3,14 +3,6 @@
 // Definitions by: Luzian Zagadinow <https://github.com/luzianz>
 // Definitions: https://github.com/borisyankov/DefinitelyTyped
 
-interface IDayOfWeekMonth extends Array<number> {
-	/** dayOfMonth */
-	0: number;
-	
-	/** dayOfWeek */
-	1: number;
-}
-
 interface IWeekRow<T> extends Array<T> {
 	[dayIndex: number]: T;
 }
@@ -183,7 +175,7 @@ declare module 'node-calendar' {
 		 * @param {number} month
 		 *  Month for which the calendar should be generated.
 		 */
-		itermonthdays2(year: number, month: number): IDayOfWeekMonth[];
+		itermonthdays2(year: number, month: number): [number, number][];
 		
 		/**
 		 * A matrix (array of array) representing a month's calendar.
@@ -217,7 +209,7 @@ declare module 'node-calendar' {
 		 * @param {number} month
 		 *  Month for which the calendar should be generated.
 		 */
-		monthdays2calendar(year: number, month: number): IMonthGrid<IDayOfWeekMonth>;
+		monthdays2calendar(year: number, month: number): IMonthGrid<[number, number]>;
 		
 		/**
 		 * The specified year ready for formatting. The return value is an array
@@ -254,7 +246,7 @@ declare module 'node-calendar' {
 		 * @param {number} width
 		 *  The number of months to include in each row. Default: 3
 		 */
-		yeardays2calendar(year: number, width?: number): IYearGrid<IDayOfWeekMonth>;
+		yeardays2calendar(year: number, width?: number): IYearGrid<[number, number]>;
 	}
 	
 	// Undocumented