Index: MsgDefs.h
===================================================================
diff -u -rd2b33b8d231f0c8439db5973bc67238f8dde79bf -rd8aa1fb47fd006b74113018a6b90b5c041996a1c
--- MsgDefs.h	(.../MsgDefs.h)	(revision d2b33b8d231f0c8439db5973bc67238f8dde79bf)
+++ MsgDefs.h	(.../MsgDefs.h)	(revision d8aa1fb47fd006b74113018a6b90b5c041996a1c)
@@ -212,6 +212,7 @@
     MSG_ID_DG_RESPONSE_SERVICE_MODE_REQUEST = 0xB4,                     ///< DG response to HD request to go to service mode
     MSG_ID_HD_REQUEST_DG_ALARMS = 0xB5,                                 ///< HD request for DG to re-send trigger messages for each active alarm
     MSG_ID_HD_REQUEST_DG_SERVICE_MODE = 0xB6,                           ///< HD request for DG to to go to service mode
+    MSG_ID_DG_RTC_EPOCH = 0xB7,                                         ///< DG RTC epoch broadcast message
 
 #ifdef EMC_TEST_BUILD
     MSG_ID_CAN_ERROR_COUNT = 0x999,  // test code in support of EMC testing
@@ -315,7 +316,7 @@
     MSG_ID_HD_BUBBLE_STATUS_OVERRIDE = 0x805E,                          ///< HD air bubble detector status override request
     MSG_ID_HD_BLOOD_PRIME_VOLUME_OVERRIDE = 0x805F,                     ///< HD blood prime volume override request
     MSG_ID_HD_BUBBLE_SELF_TEST_REQUEST = 0x8060,                        ///< HD air bubble detector self-test request
-    MSG_ID_HD_FAN_RPM_ALARM_START_TIME_OFFSET_OVERRIDE = 0x8061,        ///< HD fan RPM alarm start time override request TODO remove once DEN-12224 merged into staging
+    MSG_ID____AVAILABLE_2 = 0x8061,                                     ///< Unused - this message ID is available for use
     MSG_ID_HD_SWITCHES_STATUS_OVERRIDE = 0x8062,                        ///< HD switches status override request
     MSG_ID_HD_SWITCHES_PUBLISH_INTERVAL_OVERRIDE = 0x8063,              ///< HD switches data publish override request
     MSG_ID_HD_BATTERY_REMAINING_PERCENT_OVERRIDE = 0x8064,              ///< HD battery remaining percent override request