This app works best with JavaScript enabled.
Skip to content
Cloudflare docs logomark
Cloudflare
Docs
Cloudflare Time Services logo
Time Services
Navigation menu icon
Open external link
Cloudflare docs logomark
Cloudflare
Docs
Cloudflare Time Services logo
Time Services
Dropdown icon
Time Services menu
Cloudflare Time Services homepage
Cloudflare homepage
Welcome
Expand: Network Time Protocol
Network Time Protocol
User Guide
Expand: Network Time Security
Network Time Security
User Guide
Expand: Roughtime
Roughtime
Roughtime Protocol
User Guide
Advanced Usage
Search icon (depiction of a magnifying glass)
Give Feedback
GitHub icon
Visit Time Services on GitHub
Light theme icon (depiction of a sun)
Dark theme icon (depiction of a moon)
Set theme to dark (⇧+D)
Cloudflare Time Services docs
Learn more about Cloudflare’s suite of time services.
NTP
NTS
Roughtime