We understand that our users need to know what we do with information we collect when you use our services. If you'd like to read the main policy which Google adheres to, see the Privacy Center.
What we log
Google Public NTP stores temporary logs with your full IP address. We do this for debugging, to improve our service, and so we can spot potentially bad things like DDoS attacks.
We delete these temporary logs within 30 days.
We don't correlate or combine information from our logs with any personal information that you have provided Google for other services.