diff -r 7377cd066123 -r 6d3f91904178 ntp.rst
--- a/ntp.rst	Fri Oct 16 00:09:34 2020 +0300
+++ b/ntp.rst	Sun Oct 25 01:19:24 2020 +0300
@@ -12,17 +12,32 @@
 NTP is a protocol to synchronizing the clocks on host using publicly
 available NTP servers.
 
-How use?
-========
+Famous NTP servers
+==================
+
+Many Linux Distros provides time servers::
 
-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
+
+Some big companies too::
+
+  time.google.com
 
-  0.debian.pool.ntp.org 1.debian.pool.ntp.org
-  2.debian.pool.ntp.org
-  uk.pool.ntp.org       ua.pool.ntp.org
+Or educational institutions::
+
+  time.mit.edu
+
+Or individuals and volunteers::
 
-Some servers are national. They can be found as ISO 639 code with .pool.ntp.org
-suffix.
+  us.pool.ntp.org
+  ua.pool.ntp.org
+
+https://developers.google.com/time/
+  Free, global time service with leap-smeared time.
+https://www.ntppool.org/en/
+  Big virtual cluster of timeservers.
 
 Under Debian
 ============