# UTC Time

Since most Cerulean devices are network devices without a PPS input, they rely on an NTP server for accurate time synchronization. We recommend using SonarView to facilitate this connection for consistency and fallback reasons, but certain devices can connect to the NTP server directly like the [Surveyor](/c/surveyor-240-16/utc-time.md). \
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To configure the NTP server used by SonarView, navigate to **Session Configurations**:

<figure><img src="/files/T1duOEXzAloWM4PuS7VH" alt=""><figcaption></figcaption></figure>

By default, the NTP Server Hostname is set to **time.google.com**, Google's NTP server. **SonarLink** needs to be able to reach this URL (SonarLink is the server side of our app. If you don't know what this is, then it is running in the same place as SonarView). \
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If SonarLink is not connected to the internet, you must provide an accessible NTP server URL. There are many GPS-based NTP servers available on Amazon that can be added to your network, allowing you to set the NTP Server Hostname accordingly. Otherwise, SonarLink will rely on its system time to sync with the Surveyor, but any inaccuracies in the system clock will be reflected in the Surveyor data.


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