@@ -103,7 +103,7 @@ export class DatePipe implements PipeTransform {
   transform(value: any, pattern: string = 'mediumDate'): string {
     let date: Date;
 
-    if (isBlank(value)) return null;
+    if (isBlank(value) || value !== value) return null;
 
     if (typeof value === 'string') {
       value = value.trim();
 
@@ -53,6 +53,8 @@ export function main() {
 
       it('should return null for empty string', () => expect(pipe.transform('')).toEqual(null));
 
+      it('should return null for NaN', () => expect(pipe.transform(Number.NaN)).toEqual(null));
+
       it('should support ISO string without time',
          () => { expect(() => pipe.transform(isoStringWithoutTime)).not.toThrow(); });