You can use the timeserver keyword to specify the system that sets the date and time on the system you want to install.
Do not set timeserver=host-name or ip-address if you are running a name service.
Choose one of the following methods to set the timeserver keyword:
To configure the system to serve as its own time server, set timeserver=localhost. If you specify localhost as the time server, the system's time is assumed to be correct.
To specify another system as the time server, specify either the host name or the IP address of the time server with the timeserver keyword. Use the following syntax:
timeserver=host-name or ip-address
where host-name is the host name of the time server system, and ip-address specifies the IP address of the time server.