Index: Include/Library/ShellLib.h
===================================================================
--- Include/Library/ShellLib.h	(revision 16168)
+++ Include/Library/ShellLib.h	(working copy)
@@ -1,7 +1,7 @@
 /** @file
   Provides interface to shell functionality for shell commands and applications.
 
-  Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
   This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
   which accompanies this distribution.  The full text of the license may be found at
@@ -668,6 +668,7 @@
   TypeStart,        ///< A flag that has variable value appended to the end (IE "-ad", "-afd", "-adf", etc...).
   TypeDoubleValue,  ///< A flag that has 2 space seperated value data following it (IE "-a 1 2").
   TypeMaxValue,     ///< A flag followed by all the command line data before the next flag.
+  TypeTimeValue,    ///< A flag that has a time value following it (IE "-a -5:00").
   TypeMax,
 } SHELL_PARAM_TYPE;
 
Index: Library/UefiShellLevel2CommandsLib/TimeDate.c
===================================================================
--- Library/UefiShellLevel2CommandsLib/TimeDate.c	(revision 16168)
+++ Library/UefiShellLevel2CommandsLib/TimeDate.c	(working copy)
@@ -2,7 +2,7 @@
   Main file for time, timezone, and date shell level 2 and shell level 3 functions.
 
   (C) Copyright 2012-2014, Hewlett-Packard Development Company, L.P.
-  Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
   This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
   which accompanies this distribution.  The full text of the license may be found at
@@ -647,7 +647,7 @@
 STATIC CONST SHELL_PARAM_ITEM TimeZoneParamList3[] = {
   {L"-l", TypeFlag},
   {L"-f", TypeFlag},
-  {L"-s", TypeValue},
+  {L"-s", TypeTimeValue},
   {NULL, TypeMax}
   };
 
Index: Library/UefiShellLib/UefiShellLib.c
===================================================================
--- Library/UefiShellLib/UefiShellLib.c	(revision 16168)
+++ Library/UefiShellLib/UefiShellLib.c	(working copy)
@@ -1903,6 +1903,7 @@
 
   @param[in] Name               pointer to Name of parameter found
   @param[in] AlwaysAllowNumbers TRUE to allow numbers, FALSE to not.
+  @param[in] TimeNumbers        TRUE to allow numbers with ":", FALSE otherwise.
 
   @retval TRUE                  the Parameter is a flag.
   @retval FALSE                 the Parameter not a flag.
@@ -1911,7 +1912,8 @@
 EFIAPI
 InternalIsFlag (
   IN CONST CHAR16               *Name,
-  IN BOOLEAN                    AlwaysAllowNumbers
+  IN CONST BOOLEAN              AlwaysAllowNumbers,
+  IN CONST BOOLEAN              TimeNumbers
   )
 {
   //
@@ -1922,7 +1924,7 @@
   //
   // If we accept numbers then dont return TRUE. (they will be values)
   //
-  if (((Name[0] == L'-' || Name[0] == L'+') && InternalShellIsHexOrDecimalNumber(Name+1, FALSE, FALSE)) && AlwaysAllowNumbers) {
+  if (((Name[0] == L'-' || Name[0] == L'+') && InternalShellIsHexOrDecimalNumber(Name+1, FALSE, FALSE, TimeNumbers)) && AlwaysAllowNumbers) {
     return (FALSE);
   }
 
@@ -2056,6 +2058,7 @@
         // possibly trigger the next loop(s) to populate the value of this item
         //
         case TypeValue:
+        case TypeTimeValue:
           GetItemValue = 1;
           ValueSize = 0;
           break;
@@ -2075,7 +2078,7 @@
           ASSERT(GetItemValue == 0);
           break;
       }
-    } else if (GetItemValue != 0 && !InternalIsFlag(Argv[LoopCounter], AlwaysAllowNumbers)) {
+    } else if (GetItemValue != 0 && !InternalIsFlag(Argv[LoopCounter], AlwaysAllowNumbers, CurrentItemPackage->Type == TypeTimeValue)) {
       ASSERT(CurrentItemPackage != NULL);
       //
       // get the item VALUE for a previous flag
@@ -2114,7 +2117,7 @@
       if (GetItemValue == 0) {
         InsertHeadList(*CheckPackage, &CurrentItemPackage->Link);
       }
-    } else if (!InternalIsFlag(Argv[LoopCounter], AlwaysAllowNumbers) ){ //|| ProblemParam == NULL) {
+    } else if (!InternalIsFlag(Argv[LoopCounter], AlwaysAllowNumbers, FALSE)){
       //
       // add this one as a non-flag
       //
@@ -3134,7 +3137,7 @@
 
   Hex = FALSE;
 
-  if (!InternalShellIsHexOrDecimalNumber(String, Hex, TRUE)) {
+  if (!InternalShellIsHexOrDecimalNumber(String, Hex, TRUE, FALSE)) {
     Hex = TRUE;
   }
 
@@ -3551,6 +3554,7 @@
   @param[in] String       The string to evaluate.
   @param[in] ForceHex     TRUE - always assume hex.
   @param[in] StopAtSpace  TRUE to halt upon finding a space, FALSE to keep going.
+  @param[in] TimeNumbers        TRUE to allow numbers with ":", FALSE otherwise.
 
   @retval TRUE        It is all numeric (dec/hex) characters.
   @retval FALSE       There is a non-numeric character.
@@ -3560,7 +3564,8 @@
 InternalShellIsHexOrDecimalNumber (
   IN CONST CHAR16   *String,
   IN CONST BOOLEAN  ForceHex,
-  IN CONST BOOLEAN  StopAtSpace
+  IN CONST BOOLEAN  StopAtSpace,
+  IN CONST BOOLEAN  TimeNumbers
   )
 {
   BOOLEAN Hex;
@@ -3604,6 +3609,9 @@
   // loop through the remaining characters and use the lib function
   //
   for ( ; String != NULL && *String != CHAR_NULL && !(StopAtSpace && *String == L' ') ; String++){
+    if (TimeNumbers && (String[0] == L':')) {
+      continue;
+    }
     if (Hex) {
       if (!ShellIsHexaDecimalDigitCharacter(*String)) {
         return (FALSE);
@@ -3927,10 +3935,10 @@
 
   Hex = ForceHex;
 
-  if (!InternalShellIsHexOrDecimalNumber(String, Hex, StopAtSpace)) {
+  if (!InternalShellIsHexOrDecimalNumber(String, Hex, StopAtSpace, FALSE)) {
     if (!Hex) {
       Hex = TRUE;
-      if (!InternalShellIsHexOrDecimalNumber(String, Hex, StopAtSpace)) {
+      if (!InternalShellIsHexOrDecimalNumber(String, Hex, StopAtSpace, FALSE)) {
         return (EFI_INVALID_PARAMETER);
       }
     } else {
@@ -3946,7 +3954,7 @@
   //
   // make sure we have something left that is numeric.
   //
-  if (Walker == NULL || *Walker == CHAR_NULL || !InternalShellIsHexOrDecimalNumber(Walker, Hex, StopAtSpace)) {
+  if (Walker == NULL || *Walker == CHAR_NULL || !InternalShellIsHexOrDecimalNumber(Walker, Hex, StopAtSpace, FALSE)) {
     return (EFI_INVALID_PARAMETER);
   }
 
Index: Library/UefiShellLib/UefiShellLib.h
===================================================================
--- Library/UefiShellLib/UefiShellLib.h	(revision 16168)
+++ Library/UefiShellLib/UefiShellLib.h	(working copy)
@@ -1,7 +1,7 @@
 /** @file
   Provides interface to shell functionality for shell commands and applications.
 
-  Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
   This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
   which accompanies this distribution.  The full text of the license may be found at
@@ -60,6 +60,7 @@
   @param[in] String       The string to evaluate.
   @param[in] ForceHex     TRUE - always assume hex.
   @param[in] StopAtSpace  TRUE to halt upon finding a space, FALSE to keep going.
+  @param[in] TimeNumbers        TRUE to allow numbers with ":", FALSE otherwise.
 
   @retval TRUE        It is all numeric (dec/hex) characters.
   @retval FALSE       There is a non-numeric character.
@@ -69,7 +70,8 @@
 InternalShellIsHexOrDecimalNumber (
   IN CONST CHAR16   *String,
   IN CONST BOOLEAN  ForceHex,
-  IN CONST BOOLEAN  StopAtSpace
+  IN CONST BOOLEAN  StopAtSpace,
+  IN CONST BOOLEAN  TimeNumbers
   );
 
 /**