diff --git a/docs/rolereference.rst b/docs/rolereference.rst
index 68af373fba627fde71e08d398f3d34d87ceabf68..f4d3912e1371feb0054ad56113422ff47d9d6fda 100644
--- a/docs/rolereference.rst
+++ b/docs/rolereference.rst
@@ -300,6 +300,8 @@ The role implements the following:
   custom script that outputs diffs if upgrades are available. Script is run via
   cronjob on hourly basis, and any output will be delivered to local ``root``
   user.
+* Optionally configures time synchronisation using NTP (if
+  ``ntp_servers`` parameter is set).
 
 
 Role dependencies
@@ -400,6 +402,19 @@ Parameters
   higher than ``incoming_connection_limit``), even if it would go above the
   specified connection limit.
 
+**ntp_servers** (list, optional, ``[]``)
+  List of NTP servers to use for synchronising the time on managed
+  machine using NTP. If no time synchronisation should be set-up, set
+  to empty list. Default is not to configure time synchronisation.
+
+  If setting this parameter, it is recommended to set the list of
+  servers to list shipped by default Debian configuration::
+
+    - "0.debian.pool.ntp.org"
+    - "1.debian.pool.ntp.org"
+    - "2.debian.pool.ntp.org"
+    - "3.debian.pool.ntp.org"
+
 **pipreqcheck_uid** (integer, optional, ``whatever OS picks``)
   UID for user running the pip requirements upgrade checks. User is created with
   name ``pipreqcheck``.
diff --git a/docs/usage.rst b/docs/usage.rst
index 436d682702b6076b0e7c163c8fa7f0b061a42bb7..cb1b89768ea7b5e34d4b05a01121b1f74f713624 100644
--- a/docs/usage.rst
+++ b/docs/usage.rst
@@ -448,6 +448,11 @@ Let's take care of this common configuration right away:
       common_packages:
         - emacs24-nox
 
+   .. note::
+      The ``common`` role comes with ability to set-up time
+      synchronisation using NTP. This is not done by default. For
+      details see the role parameter ``ntp_servers``.
+
 6. That's all for configuration, time to apply the changes::
 
      workon mysite && ansible-playbook playbooks/site.yml
diff --git a/testsite/group_vars/all.yml b/testsite/group_vars/all.yml
index 874b64cc4cc013cb950fe776d58bfa35e3f162f5..ac10537adf2b5a48cee78d12ab5b7caa804350bc 100644
--- a/testsite/group_vars/all.yml
+++ b/testsite/group_vars/all.yml
@@ -82,4 +82,11 @@ backup_ssh_key: "{{ lookup('file', inventory_dir + '/ssh/' + ansible_fqdn) }}"
 
 # Set-up prompt.
 prompt_colour: light_purple
-prompt_id: MAR
\ No newline at end of file
+prompt_id: MAR
+
+# Set-up NTP time synchronisation.
+ntp_servers:
+  - "0.debian.pool.ntp.org"
+  - "1.debian.pool.ntp.org"
+  - "2.debian.pool.ntp.org"
+  - "3.debian.pool.ntp.org"