NTP Server List

Reference of public NTP time servers for clock synchronization.

NTP Servers

19 entries

Server DetailsPick a provider to see its hosts.

Search or browse the list to find an NTP server group. The selected entry lists every hostname - click one to copy it into your clock settings, or copy them all at once.

How to set your time server

Windows

Settings → Time & Language → Date & time → Additional clocks → Internet Time, or from an admin prompt:
w32tm /config /manualpeerlist:"pool.ntp.org" /syncfromflags:manual /update

macOS

System Settings → General → Date & Time → set the server, or:
sudo sntp -sS pool.ntp.org

Linux

Add NTP=pool.ntp.org to /etc/systemd/timesyncd.conf, then:
sudo systemctl restart systemd-timesyncd

chrony

Add pool pool.ntp.org iburst to /etc/chrony/chrony.conf, then sudo systemctl restart chronyd.

Tool Introduction

This reference collects well-known NTP (Network Time Protocol) servers. The NTP Pool group is the community-run cluster that most operating systems point to by default - pool.ntp.org resolves to servers near you automatically. The Global group covers first-party time servers from Apple, Google and Microsoft, plus regional mirrors. The China group lists national and cloud time services hosted in mainland China for lower latency there.

NTP is carried over UDP port 123, so make sure your firewall allows outbound NTP. Pick 2-4 hosts from one or two groups as a fallback chain, and use a hostname rather than a raw IP where possible - the pool and most providers rotate and fail over the addresses behind them automatically.