Who is running also those neat nuclear power synced and free servers like:

de.pool.ntp.org
0.de.pool.ntp.org
1.de.pool.ntp.org
2.de.pool.ntp.org
3.de.pool.ntp.org

WHY are they FREE OF CHARGE? Despite costing money for those who run it.

Those guys: The Network Time Foundation USA.

nwtime.org

The Network Time Foundation

P.O. Box 918
Talent OR, 97540, USA

Contact Info

Voice : +1 (650) 691 8463 (TIME)
Emails :
general questions to:          info@networktimefoundation.org
press or news related to:  press@networktimefoundation.org
sales or partnership to:    sales@networktimefoundation.org

whois ntp.org
Domain Name: NTP.ORG
Domain ID: D4072681-LROR
WHOIS Server:
Referral URL: http://www.tucows.com
Updated Date: 2016-02-21T00:20:14Z
Creation Date: 1997-01-18T05:00:00Z
Registry Expiry Date: 2021-01-19T05:00:00Z
Sponsoring Registrar: Tucows Inc.
Sponsoring Registrar IANA ID: 69
Domain Status: clientTransferProhibited https://www.icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://www.icann.org/epp#clientUpdateProhibited
Registrant ID: tup9QsygIOr3Z5qe
Registrant Name: Harlan Stenn
Registrant Organization: Network Time Foundation
Registrant Street: PO Box 918
Registrant City: Talent
Registrant State/Province: OR
Registrant Postal Code: 97540
Registrant Country: US
Registrant Phone: +1.6506918463
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: stenn@nwtime.org
Admin ID: tu0BALz2GHwvIeYe
Admin Name: Harlan Stenn
Admin Organization: Network Time Foundation
Admin Street: PO Box 918
Admin City: Talent
Admin State/Province: OR
Admin Postal Code: 97540
Admin Country: US
Admin Phone: +1.6502248513
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email: stenn@nwtime.org
Tech ID: tuu2T3W3pz7DmPQG
Tech Name: Michael Davis
Tech Organization: University of Delaware
Tech Street: 192 S. Chapel St.
Tech City: Newark
Tech State/Province: DE
Tech Postal Code: 19716
Tech Country: US
Tech Phone: +1.3028318756
Tech Phone Ext:
Tech Fax:
Tech Fax Ext:
Tech Email: davis@UDEL.EDU
Name Server: DNS1.UDEL.EDU
Name Server: DNS2.UDEL.EDU
Name Server: NS1.NTP.ORG
Name Server: NS2.NTP.ORG
DNSSEC: unsigned
>>> Last update of WHOIS database: 2016-04-15T12:57:23Z <<<

if Germany ever misbehaves… they gonna pull the time-serving-plug.

whois networktimefoundation.org?

whois networktimefoundation.org
Domain Name: NETWORKTIMEFOUNDATION.ORG
Domain ID: D162208637-LROR
WHOIS Server:
Referral URL: http://www.tucows.com
Updated Date: 2015-08-11T21:12:05Z
Creation Date: 2011-05-06T18:28:08Z
Registry Expiry Date: 2016-05-06T18:28:08Z
Sponsoring Registrar: Tucows Inc.
Sponsoring Registrar IANA ID: 69
Domain Status: clientTransferProhibited https://www.icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://www.icann.org/epp#clientUpdateProhibited
Registrant ID: tueVC3WP7N3ZiiT6
Registrant Name: Contact Privacy Inc. Customer 0127504965
Registrant Organization: Contact Privacy Inc. Customer 0127504965
Registrant Street: 96 Mowat Ave
Registrant City: Toronto
Registrant State/Province: ON
Registrant Postal Code: M6K3M1
Registrant Country: CA
Registrant Phone: +1.4165385457
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: networktimefoundation.org@contactprivacy.com
Admin ID: tueVC3WP7N3ZiiT6
Admin Name: Contact Privacy Inc. Customer 0127504965
Admin Organization: Contact Privacy Inc. Customer 0127504965
Admin Street: 96 Mowat Ave
Admin City: Toronto
Admin State/Province: ON
Admin Postal Code: M6K3M1
Admin Country: CA
Admin Phone: +1.4165385457
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email: networktimefoundation.org@contactprivacy.com
Tech ID: tueVC3WP7N3ZiiT6
Tech Name: Contact Privacy Inc. Customer 0127504965
Tech Organization: Contact Privacy Inc. Customer 0127504965
Tech Street: 96 Mowat Ave
Tech City: Toronto
Tech State/Province: ON
Tech Postal Code: M6K3M1
Tech Country: CA
Tech Phone: +1.4165385457
Tech Phone Ext:
Tech Fax:
Tech Fax Ext:
Tech Email: networktimefoundation.org@contactprivacy.com
Name Server: NS1.EVERETT.ORG
Name Server: NS2.EVERETT.ORG
DNSSEC: unsigned
>>> Last update of WHOIS database: 2016-04-17T08:34:22Z <<<

just for your records.

What would be alternatives?

Zeitgleich mit Hilfe des Network Time Protocol (NTP)

Um eine genaue Uhrzeit im Datennetz zur Verfügung zu haben, betreibt das Rechenzentrum einen NTP Timeserver, der seine Zeit von mehreren lokalen Funkuhren bezieht. Die Funkuhren werden ihrerseits mit der Normzeituhr in Braunschweig synchronisiert. Die Daten des Servers sind:

    ntp.uni-regensburg.de
    ntp.ur.de

Dieser Server ist sowohl vom Campus als auch von außerhalb der Universität erreichbar. Sie können jedoch auch die NTP-Server der Physikalisch-Technischen Bundesanstalt (PTB), Braunschweig und Berlin verwenden.

    ptbtime1.ptb.de
    ptbtime2.ptb.de
    ptbtime3.ptb.de

i gonna test those and report back…

apt-get update;
apt-get install ntp;

vim /etc/ntp.conf

# pool.ntp.org maps to about 1000 low-stratum NTP servers.  Your server will
# pick a different set every time it starts up.  Please consider joining the
# pool: <http://www.pool.ntp.org/join.html>
server ntp.ur.de
server 0.debian.pool.ntp.org iburst
server 1.debian.pool.ntp.org iburst
server 2.debian.pool.ntp.org iburst
server 3.debian.pool.ntp.org iburst
admin