.. _configure-date-time-groups:

Date time groups
--------------------

.. tip:: 

   :ref:`use-action-search-to-navigate-automate`



Overview 
..........

Date Time Groups define time zones for the various devices that are
connected to Cisco UCM. Each device exists as a member of only one
device pool, and each device pool has only one assigned Date Time Group.

UCM automatically configures a default Date Time Group, called ``CMLocal``, which syncs 
to the active date and time of the operating system on the server where UCM is installed. 
You can change the settings for ``CMLocal``, as required.
Normally, adjust server Date and Time to the local time zone date and
time.

.. tip:: 
   
   For a worldwide distribution of Cisco Unified IP phones, create one 
   named Date Time Group for each of the time zones in which you deploy endpoints.



Add date time groups
......................


1. Log in as provider, reseller, or customer administrator.
2. Set the hierarchy path to a customer or site level.
3. If prompted, select the NDL that contains the Cisco Unified CM on
   which you are configuring the Date Time Group.
4. Go to **Date Time Groups**.

5. Click the Plus icon (+) to add a new record, then, provide configuration details: 

   +--------------------+-----------------------------------------------+
   | Field              | Description                                   |
   +====================+===============================================+
   | Group Name         | Enter the name that you want to assign to the |
   |                    | new Date Time Group. This field is mandatory. |
   +--------------------+-----------------------------------------------+
   | Time Zone          | Choose the time zone for the group that you   |
   |                    | are adding. This field is mandatory.          |
   +--------------------+-----------------------------------------------+
   | Separator          | Choose the separator character to use between |
   |                    | the date fields. This field is mandatory.     |
   +--------------------+-----------------------------------------------+
   |                    | Choose the date format for the date that      |
   | Date Format        | displays on the Cisco Unified IP Phones. This |
   |                    | field is mandatory.                           |
   +--------------------+-----------------------------------------------+
   | Time Format        | Choose a 12-hour or 24-hour time format. This |
   |                    | field is mandatory.                           |
   +--------------------+-----------------------------------------------+
   |                    | To ensure that a phone that is running SIP    |
   | Selected Phone NTP | gets its date and time configuration from an  |
   | References         | NTP server, select the phone NTP references   |
   |                    | for the Date Time Group.                      |
   +--------------------+-----------------------------------------------+

6. Click **Save**.