Chrony Will Become Ubuntu’s New Default NTP Client

Time might seem like a small detail in your operating system — something you rarely think about unless your clock is wrong.

But in reality, accurate timekeeping is essential to everything from file timestamps and system logs to encryption and security protocols.

And now, with Ubuntu 25.10, the way your system keeps time is getting a serious upgrade.

Starting with this release, Ubuntu will switch to Chrony as its default NTP (Network Time Protocol) client, replacing the long-used systemd-timesync.

So, why does this change matter? And what makes Chrony and NTS better? Let’s take a closer look.

What Is Chrony, and Why Now?

Chrony isn’t new — it’s been around for years, quietly building a reputation for accuracy and flexibility.

Unlike the traditional systemd-timesync service, Chrony is designed to work well on systems that don’t stay powered on 24/7, like laptops or virtual machines. It adapts quickly to changing network conditions and can correct large time errors much faster.

That makes it a great fit for modern computing, where uptime isn’t always guaranteed and network environments are constantly shifting.