diff -r 123f59618e87 -r 870693ce6ff0 ntp.rst
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+++ b/ntp.rst	Mon Feb 22 13:34:55 2016 +0200
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+.. -*- coding: utf-8; -*-
+.. include:: HEADER.rst
+
+=====
+ NTP
+=====
+.. contents::
+   :local:
+
+What is NTP?
+============
+
+NTP is a protocol to synchronizing the clocks on host using publicly
+available NTP servers.
+
+How use?
+========
+
+To use you must know NTP servers. Here list some of them::
+
+  0.debian.pool.ntp.org 1.debian.pool.ntp.org
+  2.debian.pool.ntp.org
+  uk.pool.ntp.org       ua.pool.ntp.org
+
+Some servers are national. They can be found as ISO 639 code with .pool.ntp.org
+suffix.
+
+Under Debian
+============
+
+Install ``ntpdate`` package::
+
+  $ sudo apt-get install ntpdate
+
+and sync date with some NTP server::
+
+  # sudo ntpdate 0.debian.pool.ntp.org
+
+Under Windows
+=============
+
+See:
+
+  http://support.microsoft.com/kb/q216734/
+    Windows Time Service Tools and Settings.
+  http://support.microsoft.com/kb/q223184/
+    How to configure an authoritative time server in Windows 2000.
+  http://support.microsoft.com/kb/307897/
+    How to synchronize the time with the Windows Time service in Windows XP.
+  http://support.microsoft.com/kb/216734/
+    How to configure an authoritative time server in Windows 2000.
+