The output for all CLI show commands includes a timestamp header to indicate when the command output was generated. This information can be helpful when communicating with Support.
The following command output shows a timestamp example.
Switch:1#show alarm statistics
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                Command Execution Time: Wed Nov 07 19:55:15 2018 UTC
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====================================================================================
                                ALARM STATISTICS
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PERSISTENT PERSISTENT PERSISTENT  PERSISTENT  DYNAMIC   DYNAMIC  DYNAMIC DYNAMIC
  ALARM      ACTIVE    CLEARED      WRPRD      ALARM    ACTIVE   CLEARED  WRPRD
    0          0          0           0         11        8         3       0