chrony.conf

#
# NTS servers in chrony format
#

# Cloudflare (Anycast)
pool time.cloudflare.com nts iburst maxsources 2

# NTP.br (Brazil)
server a.st1.ntp.br nts iburst
server b.st1.ntp.br nts iburst
server c.st1.ntp.br nts iburst
server d.st1.ntp.br nts iburst
server gps.ntp.br nts iburst

# Brazil
server time.bolha.one nts iburst

# Friedrich-Alexander-Universität / FAU (Germany)
server ntp3.fau.de nts iburst
server ntp3.ipv6.fau.de nts iburst

# Physikalisch-Technische Bundesanstalt / PTB (Germany)
server ptbtime1.ptb.de nts iburst
server ptbtime2.ptb.de nts iburst
server ptbtime3.ptb.de nts iburst

# Germany
server www.jabber-germany.de nts iburst
server www.masters-of-cloud.de nts iburst
server ntp-by.dynu.net nts iburst

# TimeNL (Netherlands)
server ntppool1.time.nl nts iburst
server ntppool2.time.nl nts iburst

# Singapore
server ntpmon.dcs1.biz nts iburst

# Netnod (Sweden)
server nts.netnod.se nts iburst
server gbg1.nts.netnod.se nts iburst
server gbg2.nts.netnod.se nts iburst
server lul1.nts.netnod.se nts iburst
server lul2.nts.netnod.se nts iburst
server mmo1.nts.netnod.se nts iburst
server mmo2.nts.netnod.se nts iburst
server sth1.nts.netnod.se nts iburst
server sth2.nts.netnod.se nts iburst
server svl1.nts.netnod.se nts iburst
server svl2.nts.netnod.se nts iburst

# Switzerland
server ntp.3eck.net nts iburst
server ntp.trifence.ch nts iburst
server ntp.zeitgitter.net nts iburst
server time.signorini.ch nts iburst

# System76 (US / France / Brazil)
server virginia.time.system76.com nts iburst
server ohio.time.system76.com nts iburst
server oregon.time.system76.com nts iburst
server paris.time.system76.com nts iburst
server brazil.time.system76.com nts iburst

# US
server stratum1.time.cifelli.xyz nts iburst
server time.cifelli.xyz nts iburst
server time.txryan.com nts iburst