# SPDX-FileCopyrightText: 2020 Aminda Suomalainen <suomalainen+git@mikaela.info>
# SPDX-FileCopyrightText: 2023 Mike Cifelli <26522946+macifell@users.noreply.github.com>
#
# SPDX-License-Identifier: BSD-3-Clause
# SPDX-License-Identifier: CC0-1.0

# LICENSE of this file? I don't consider this as a work that exceeds
# copyright treshhold (while attribution is always nice) so for me this is
# public domain aka CC0. However I have been following https://github.com/jauderho/nts-servers
# which clearly states being BSD-3-Clause and as I am not a lawyer, I have
# no idea how this works, so I am including both license informations.just
# in case.

# NOTE: NTS support requires Chrony 4.0 or newer!

# Cloudflare NTS, anycast, works probably anywhere. No leap second smearing.
pool time.cloudflare.com maxsources 2 iburst nts

# Swedish anycast https://www.netnod.se/time-and-frequency/how-to-use-nts
server nts.netnod.se iburst nts

# https://system76.com/time
server paris.time.system76.com iburst nts

# https://nts.time.nl/ - regardless of name provides 1 v4 & v6 address
# no pool directive. Also no leap second smearing.
server ntppool1.time.nl iburst nts
server ntppool2.time.nl iburst nts

# Germany https://www.ptb.de/cms/en/ptb/fachabteilungen/abtq/gruppe-q4/ref-q42/time-synchronization-of-computers-using-the-network-time-protocol-ntp.html
server ptbtime1.ptb.de iburst nts
server ptbtime2.ptb.de iburst nts
server ptbtime3.ptb.de iburst nts

# Germany
server www.jabber-germany.de iburst nts
server www.masters-of-cloud.de iburst nts