Index: RollingFileAppender.cs
===================================================================
--- RollingFileAppender.cs	(revision 383163)
+++ RollingFileAppender.cs	(working copy)
@@ -232,7 +232,6 @@
 		/// </remarks>
 		public RollingFileAppender() 
 		{
-			m_dateTime = new DefaultDateTime();
 		}
 
 		#endregion Public Instance Constructors
@@ -240,6 +239,17 @@
 		#region Public Instance Properties
 
 		/// <summary>
+		/// Gets or sets the strategy for determining the current date and time. The default
+		/// strategy is to use DateTime.Now. DateTime.UtcNow may be used by specifying
+		/// <see cref="UniversalDateTime"/>.
+		/// </summary>
+		public IDateTime DateTimeStrategy
+		{
+			get { return m_dateTime; }
+			set { m_dateTime = value; }
+		}
+
+		/// <summary>
 		/// Gets or sets the date pattern to be used for generating file names
 		/// when rolling over on date.
 		/// </summary>
@@ -1410,9 +1420,10 @@
 
 		/// <summary>
 		/// This object supplies the current date/time.  Allows test code to plug in
-		/// a method to control this class when testing date/time based rolling.
+		/// a method to control this class when testing date/time based rolling. The default
+		/// implementation uses the underlying value of DateTime.Now.
 		/// </summary>
-		private IDateTime m_dateTime = null;
+		private IDateTime m_dateTime = new DefaultDateTime();
 
 		/// <summary>
 		/// The date pattern. By default, the pattern is set to <c>".yyyy-MM-dd"</c> 
@@ -1542,6 +1553,26 @@
 			}
 		}
 
+		/// <summary>
+		/// Implementation of <see cref="IDateTime"/> that returns the current time as the coordinated universal time (UTC).
+		/// </summary>
+		private class UniversalDateTime : IDateTime
+		{
+			/// <summary>
+			/// Gets the <b>current</b> time.
+			/// </summary>
+			/// <value>The <b>current</b> time.</value>
+			/// <remarks>
+			/// <para>
+			/// Gets the <b>current</b> time.
+			/// </para>
+			/// </remarks>
+			public DateTime Now
+			{
+				get { return DateTime.UtcNow; }
+			}
+		}
+
 		#endregion DateTime
 	}
 }