.. _configure_date_time_groups:

Configure Date Time Groups
----------------------------

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

Cisco Unified CM automatically configures a default Date Time Group that
is called CMLocal. CMLocal synchronizes to the active date and time of the
operating system on the server where Cisco Unified Communications Manager
is installed. You can change the settings for CMLocal as desired.
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.

**Perform these steps**:


1. Log in as provider, reseller, or customer administrator.
2. Make sure that the hierarchy path is set 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. Perform one of the following:

   * If you logged in as provider or reseller administrator, choose
     **Device Management > CUCM > Date Time Groups**.
   * If you logged in as a customer administrator, choose
     **Device Management > Advanced > Date Time Groups**.
     
5. Click **Add**.
6. Provide the following information:

   +--------------------+-----------------------------------------------+
   | 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.                      |
   +--------------------+-----------------------------------------------+

7. Click **Save**.