diff --git a/xml/System.Threading.Tasks/Task.xml b/xml/System.Threading.Tasks/Task.xml
index 5b75130d0b2..24f273a315f 100644
--- a/xml/System.Threading.Tasks/Task.xml
+++ b/xml/System.Threading.Tasks/Task.xml
@@ -2106,7 +2106,7 @@ End Sub
         <Parameter Name="millisecondsDelay" Type="System.Int32" Index="0" FrameworkAlternate="dotnet-uwp-10.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.6;netstandard-2.0;netstandard-2.1;xamarinandroid-7.1;xamarinios-10.8;xamarinmac-3.0" />
       </Parameters>
       <Docs>
-        <param name="millisecondsDelay">The number of milliseconds to wait before completing the returned task, or -1 to wait indefinitely.</param>
+        <param name="millisecondsDelay">The number of milliseconds to wait before completing the returned task, or -1 to wait indefinitely. This time does not include any time that passes while the system is suspended (e.g. in Standby or Hibernate).</param>
         <summary>Creates a task that completes after a specified number of milliseconds.</summary>
         <returns>A task that represents the time delay.</returns>
         <remarks>
@@ -2177,7 +2177,7 @@ End Sub
         <Parameter Name="delay" Type="System.TimeSpan" Index="0" FrameworkAlternate="dotnet-uwp-10.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.6;netstandard-2.0;netstandard-2.1;xamarinandroid-7.1;xamarinios-10.8;xamarinmac-3.0" />
       </Parameters>
       <Docs>
-        <param name="delay">The time span to wait before completing the returned task, or <see langword="TimeSpan.FromMilliseconds(-1)" /> to wait indefinitely.</param>
+        <param name="delay">The time span to wait before completing the returned task, or <see langword="TimeSpan.FromMilliseconds(-1)" /> to wait indefinitely. This time does not include any time that passes while the system is suspended (e.g. in Standby or Hibernate).</param>
         <summary>Creates a task that completes after a specified time interval.</summary>
         <returns>A task that represents the time delay.</returns>
         <remarks>
@@ -2243,7 +2243,7 @@ End Sub
         <Parameter Name="cancellationToken" Type="System.Threading.CancellationToken" Index="1" FrameworkAlternate="dotnet-uwp-10.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.6;netstandard-2.0;netstandard-2.1;xamarinandroid-7.1;xamarinios-10.8;xamarinmac-3.0" />
       </Parameters>
       <Docs>
-        <param name="millisecondsDelay">The number of milliseconds to wait before completing the returned task, or -1 to wait indefinitely.</param>
+        <param name="millisecondsDelay">The number of milliseconds to wait before completing the returned task, or -1 to wait indefinitely. This time does not include any time that passes while the system is suspended (e.g. in Standby or Hibernate).</param>
         <param name="cancellationToken">A cancellation token to observe while waiting for the task to complete.</param>
         <summary>Creates a cancellable task that completes after a specified number of milliseconds.</summary>
         <returns>A task that represents the time delay.</returns>
@@ -2307,7 +2307,7 @@ End Sub
         <Parameter Name="cancellationToken" Type="System.Threading.CancellationToken" Index="1" FrameworkAlternate="dotnet-uwp-10.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.6;netstandard-2.0;netstandard-2.1;xamarinandroid-7.1;xamarinios-10.8;xamarinmac-3.0" />
       </Parameters>
       <Docs>
-        <param name="delay">The time span to wait before completing the returned task, or <see langword="TimeSpan.FromMilliseconds(-1)" /> to wait indefinitely.</param>
+        <param name="delay">The time span to wait before completing the returned task, or <see langword="TimeSpan.FromMilliseconds(-1)" /> to wait indefinitely. This time does not include any time that passes while the system is suspended (e.g. in Standby or Hibernate).</param>
         <param name="cancellationToken">A cancellation token to observe while waiting for the task to complete.</param>
         <summary>Creates a cancellable task that completes after a specified time interval.</summary>
         <returns>A task that represents the time delay.</returns>