System time refers to the time duration for which a user uses the Internet in your Tp-link router. You also can utilize this feature for various time-based functions like the Parental control and Access Control feature. While configuring System time in the router, a user has to select the local time zone in which a user is using his router for the Wi-Fi connection. You also can set the time manually by mentioning the current date and current day for which you want to assign the System time. The feature is triggered and configured through the web interface of the tplinkwifi.net management window.