diff --git a/MarketDataLib/Utility/HolidayCache.cs b/MarketDataLib/Utility/HolidayCache.cs
index d13d0d4..2849a06 100644
--- a/MarketDataLib/Utility/HolidayCache.cs
+++ b/MarketDataLib/Utility/HolidayCache.cs
@@ -28,7 +28,7 @@ namespace MarketData.Utils
       lock(instance)
       {
         if(null==holidays) return false;
-        return holidays.ContainsKey(dateTime);
+        return holidays.ContainsKey(dateTime.Date);
       }
     }
   }