以下是来自世界各地的时间同步服务器
pool.ntp.org: the internet cluster of ntp servers
https://support.ntp.org/Servers/StratumOneTimeServers
https://support.ntp.org/Servers/StratumTwoTimeServers
https://publicntp.org/
ntp服务器地址大全|网络时间同步服务器地址 - 站长工具网
http://www.ntp.org.cn/
配置NTP服务确保实例时间准确_云服务器 ECS(ECS)-阿里云帮助中心
https://www.hko.gov.hk/tc/nts/ntime.htm
SMG - 澳門特別行政區政府地球物理氣象局
http://time.ewha.or.kr/domestic.html
公開NTPサービス | NICT-情報通信研究機構
日本標準時(JST)グループ
INTERNET MULTIFEED CO.
Услуги | ФГУП ВНИИФТРИ
NTP SERVERS — NTP серверы точного времени
NPL-India Web Time Display
https://www.id-ntp.com/
NIST Internet Time Service
https://developers.google.com/time/
Use Apple products on enterprise networks - Apple Support
NTP: Building a more accurate time service at Facebook scale
https://www.cloudflare-cn.com/time/
Set the time reference on your EC2 instance or any internet-connected device to use the public Amazon Time Sync Service - Amazon Elastic Compute Cloud
Hurricane Electric Public Stratum 1 NTP Servers
https://time.cifelli.xyz/
Network Time Protocol (NTP) - National Research Council Canada
http://time.in.ua/
České veřejné ntp servery
NTP Server – Šlap.Net
https://www.chrony.eu/
NTP Server Deutschland – NTP Server
NTP Server Österreich – NTP Server
NTP Server Schweiz – NTP Server
https://www.ptb.de/cms/ptb/fachabteilungen/abt9/gruppe-95/ref-952/zeitsynchronisation-von-rechnern-mit-hilfe-des-network-time-protocol-ntp.html
Deutsche NTP Zeitserver
Timeservice
Time Dissemination Service via NTP
https://ntp.trifence.ch/
http://ntp.viarouge.net/
https://ntp.3eck.net/
NTP (Network Time Protocol) | INRIM
TimeNL Public NTP service
http://ntp.viarouge.net/
http://www.sth1.ntp.se/
Swedish Distributed Time Service | Netnod
Time, with focus on NTP and Slovenia
https://ntp.teambelgium.net/
Zegar - Główny Urząd Miar
https://ntp.br/
http://www.time.org.za/
http://www.ntp.baragwanath.co.za/