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~-[[DebianWiki/EditorGuide#translation|Translation(s)]]: English - [[es/NTP|Español]] - [[it/NTP|Italiano]]-~ ##For Translators - to have a constantly up to date translation header in you page, you can just add a line like the following (with the comment's character at the start of the line removed)
##<<Include(NTP, ,from="^##TAG:TRANSLATION-HEADER-START",to="^##TAG:TRANSLATION-HEADER-END")>>
##TAG:TRANSLATION-HEADER-START
~-[[DebianWiki/EditorGuide#translation|Translation(s)]]: [[NTP|English]] - [[es/NTP|Español]] - [[it/NTP|Italiano]] - [[pt_BR/NTP|Português (Brasil)]] - [[uk/NTP|Українська]]-~
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{i} systemd-timesyncd acts as a NTP client even when no network is available. This is enough to synchronize a system. NTP deamon is required only when a NTP '''server''' is required. See [[https://wiki.archlinux.org/index.php/Systemd-timesyncd| ArchLinux's page on timesyncd]] for more details {i} systemd-timesyncd acts as a NTP client even when no network is available. This is enough to synchronize a system. NTP deamon is required only when a NTP '''server''' is required. See [[https://www.freedesktop.org/software/systemd/man/systemd-timesyncd.service.html| Freedesktop.org's page on timesyncd]] for more details
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 * Type '''date''' again to see if the time changed. You time should be synced in a next minute.  * Type '''date''' again to see if the time changed. Your time should be synced in a next minute.
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 * http://www.pool.ntp.org/  * https://www.pool.ntp.org/

== See also ==

=== Debian-specific information ===

 [[DebianPkg:ntp|ntp]]

 [[DebianBug:ntp|Bugs]]

 [[DebianMan:ntpd|Manual page]]

 [[https://security-tracker.debian.org/tracker/source-package/ntp|Security Bug Tracker]]

=== Upstream specific information ===

  [[https://support.ntp.org/bin/view/Main/WebHome|Homepage]]

  [[https://bugs.ntp.org/index.cgi|Bugs & Issues]]

  [[https://support.ntp.org/bin/view/Main/DocumentationIndex|Documentation Index]]

=== Other information ===

  [[WikiPedia:Network Time Protocol|NTP on wikipedia]]
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## You can add other _helpful_ links here.
##See also:
## If this page belongs to an existing Category, add it below.
CategoryNetwork
CategoryNetwork CategorySoftware CategorySystemAdministration CatgeoryTime

Translation(s): English - Español - Italiano - Português (Brasil) - Українська

NTP

Network Time Protocol. This will make your system date match actual date, by synchronizing with network time servers.

{i} systemd-timesyncd acts as a NTP client even when no network is available. This is enough to synchronize a system. NTP deamon is required only when a NTP server is required. See Freedesktop.org's page on timesyncd for more details

Install and Configure

  • Type date to see current date and time. (Use -R to get a standard unambiguous format. Locale specific timezones are ambiguous.) 

date -R
  • Install NTP 

aptitude install ntp
  • Done.

  • Type ntpq -p to see servers you are syncing with.

  • Type date again to see if the time changed. Your time should be synced in a next minute.

  • Done.

Troubleshooting

  • If you run ntpq -p and you get 

No association ID's returned
  • Run 

dpkg-reconfigure ntp
  • And then again: 

ntpq -p

     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 ntp.pbx.org     xx.xxx.xxx.xxx   2 u    -   64    1   33.763  1799619   1.054
 xray.metadom.co xx.xxx.xxx.xxx   2 u    1   64    1   40.367  1799619   0.001
 hydrogen.cert.u xx.xxx.xxx.xxx   2 u    -   64    1   64.740  1799619   0.001
 mirror          .INIT.          16 u    -   64    0    0.000    0.000   0.001

Public Internet Time Servers

The Debian package will install a default set of time servers which should be good for most typical client installations. However you may customize this for your network location. A good source of NTP pool information is the NTP Pool Project.

See also

Debian-specific information

Upstream specific information

Other information

CategoryNetwork CategorySoftware CategorySystemAdministration ?CatgeoryTime