The System time of a Tp-link router helps a user in keeping a track of the time for which the device is being operated. You can also configure the System Time using the tplinkwifi.net interface for other time-based control features like Parental Control, Access Schedule, and QoS service. It plays an important role in determining a user, the time he is spending over the Internet. During the configuration of the System time, you need to set the time zone based on the region where your router is being operated.