Fixed: Newznab parser will attempt to use the usenetdate for age determination instead of the feed publish date.

src/NzbDrone.Core/Indexers/Newznab/NewznabParser.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Xml.Linq;
 using NzbDrone.Core.Parser.Model;
+using System.Globalization;
 
 namespace NzbDrone.Core.Indexers.Newznab
 {
@@ -19,6 +20,21 @@ namespace NzbDrone.Core.Indexers.Newznab
             return item.Comments().Replace("#comments", "");
         }
 
+        protected override DateTime GetPublishDate(XElement item)
+        {
+            var attributes = item.Elements("attr").ToList();
+            var usenetdateElement = attributes.SingleOrDefault(e => e.Attribute("name").Value.Equals("usenetdate", StringComparison.CurrentCultureIgnoreCase));
+
+            if (usenetdateElement != null)
+            {
+                var dateString = usenetdateElement.Attribute("value").Value;
+
+                return XElementExtensions.ParseDate(dateString);
+            }
+
+            return base.GetPublishDate(item);
+        }
+
         protected override long GetSize(XElement item)
         {
             var attributes = item.Elements("attr").ToList();

src/NzbDrone.Core/Indexers/XElementExtensions.cs

@@ -35,10 +35,8 @@ namespace NzbDrone.Core.Indexers
             return res;
         }
 
-        public static DateTime PublishDate(this XElement item)
+        public static DateTime ParseDate(string dateString)
         {
-            string dateString = item.TryGetValue("pubDate");
-
             try
             {
                 DateTime result;
@@ -56,6 +54,13 @@ namespace NzbDrone.Core.Indexers
             }
         }
 
+        public static DateTime PublishDate(this XElement item)
+        {
+            string dateString = item.TryGetValue("pubDate");
+
+            return ParseDate(dateString);
+        }
+
         public static List<String> Links(this XElement item)
         {
             var elements = item.Elements("link");