# Network time

Click on “System Configuration”->”Network Time”.

<figure><img src="/files/VkiHFLEm43PNtoxVpw4F" alt=""><figcaption></figcaption></figure>

{% hint style="warning" %}
The gateway must know the current UTC time to operate.&#x20;

Without the current time the gateway will send no data.
{% endhint %}

The time and date are obtained from SNTP server using Simple Network Time Protocol. There are many SNTP servers over Internet. All SNTP communication is performed on port 123.

&#x20;The default SNTP server is set to pool.ntp.org. Normally there is no need to change this setting.

The Timezone Offset must be set to “0” to set UTC time. The time zone and DST compensation is performed by the Boomerang server.

&#x20;If the gateway is connected to a network with internet access (i.e. “Boomerang in the Cloud”), you can leave the settings as they are with default NTP-server set to pool.ntp.org.

In case of a local network with Boomerang-On-Premise and blocked internet access, you have to change the SNTP server settings in the gateway to a SNTP server BBO can access.

&#x20;Click "Save” to save the settings.&#x20;


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