Date

For a server not using NTP, this field shows the server's current date and allows that to be changed.

If using NTP this field is greyed out. For virtual servers this field is not used. If not using NTP, the virtual server takes its time from the virtual server host platform.

Time

For a server not using NTP, this field shows the server's current UTC time and allows that to be changed.

If using NTP this field is greyed out. For virtual servers this field is not used. If not using NTP, the virtual server takes its time from the virtual server host platform.

Timezone

In some instances the time displayed or used by a function needs to be the local time rather than UTC time. The Timezone field determines the appropriate offset applied to the UTC time above. Note that changing the timezone can cause a "Session expired" message to appear in the browser in which case you need to login again.

Enable Network Time Protocol Client

When selected, the server obtains the current date and time from the NTP servers using the settings below.

NTP Servers

Use this field to enter the IP address of an NTP server or servers to use. Enter each address as a separate line. The network administrator or ISP may have an NTP server for this purpose.

A list of publicly accessible NTP servers is available athttp://support.ntp.org/bin/view/Servers/WebHome. However, it is your responsibility to comply with the usage policy of the chosen server.

Choose several unrelated NTP servers in case one of the servers becomes unreachable or its clock unreliable. The server uses the responses it receives from each NTP server to determine reliability.

Synchronize system clock before starting service

Use this option to synchronize the system clock to an NTP time server before starting other services. Do not use this option if the time server cannot be reliably reached. Waiting for synchronization to occur may block use of the system until a timeout has passed.

Use local time source

When not selected, external NTP takes priority over the internal system clock. If selected, the local system clock is used as the time source. Only use this option if system clock is synchronized with another reliable source, for example a radio controlled clock device.