![]() Service, but it is an experiment in providing trusted time. Roughtime is not yet a high-precision time If you are interested in secure time distribution, you may also want to look at Does Google Public NTP support Autokey or NTS? Google Public NTP servers are available in several of our data centers in NorthĪmerica, Europe, and Asia. Where are your servers currently located? Google Public NTP always sets the LI field to 0, because the leap second isĪpplied on the server side using the smear. How does Google Public NTP use the Leap Indicator (LI) field? Technical Are there more details about the leap smear? Updates from the team and ask any questions you have. We recommend that you join our Google Groups to get How can I get support from the Google Public NTP team? Can I use Google Public NTP from virtual machines running at other cloud providers? Time service from that virtual server is smeared identically to Google Public Yes, but you will get better results by using Can I use Google Public NTP from Google Compute Engine instances? Can I synchronize it to Google Public NTP? Without an SLA we do not provide any commitments about availability orĪccuracy. Can I use Google Public NTP for my commercial project or products? Google Public NTP is a service without an SLA. We can accept traffic from any number of NTP clients. Can I redirect all my users to Google Public NTP? I'm running an ISP or enterprise network. We are not providing an SLA for this service at this time. Does it matter in what order I specify the server names? You can use to be directed automatically to a nearby Do I need to use all four Google Public NTP server names? Google Public NTP should work with most ISPs, assuming you have access to change Does Google Public NTP work with all ISPs? Vary greatly based on your specific location. It is available to Internet users around the world, though your experience may In which countries is Google Public NTP available? If you find any situation where Google Public NTP does not work Google Public NTP can be used on any device that supports NTP or SNTP Is Google Public NTP suitable for all types of Internet-enabled devices? Results during a leap second may be unpredictable. We recommend that you do not mix smeared and non-smeared NTP servers. We have detailed instructions for many popular operating Will automatically select an appropriate Google server nearby. If you cannot configure multiple servers, Use and support How do I use Google Public NTP?Ĭonfigure your devices to use either the NTP server or theįour servers, ,, and Do I need a Google Account to use Google Public NTP? Google Public NTP is an independent service. Are there any cross-product dependencies with Google Public NTP? It's also used by Google Fiber customers. We use Google Public NTP to set the clocks on our laptops, workstations, This available globally to Internet-connected devices. Smeared time via NTP to customers' virtual machines. When we launched Google Compute Engine, we started providing Second, stretching out the change across the hours around the leap. Since 2008, we've addressed this problem internally by "smearing" the leap Many systems do not correctly handle the leap. Many NTP servers do not correctly announce leap seconds,Īnd that even when they are announced through NTP, Timekeeping is important to us, and NTP is by far the most widely used time Smoothly handle leap seconds without disruptions. To help us improve, we would love to hear your feedback and any suggestions for future updates.Google Public NTP is a free, global time service that you can use to synchronize Time zone and city time converter between multiple locations worldwide.Ĭonverter allows find, add and compare over 100,000 cities and about 300 time zones.Ĭonverts times instantly as you type, in both direction. Compare and convert time between many locations at a time. ![]()
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