Actually, this is already a feature of the Covenant Eyes Filtering Service. With our Time Controls settings, you have two different options for limiting times of Internet access.
1. You can choose which blocks of time Internet access will be allowed. Basically, you set a schedule for Internet use.
2. You can choose a time limit for Internet access. You have the ability to set a weekly limit (in minutes), or a daily limit, or both. Once your daily or weekly time allowance runs out, you will not be able to access the Internet again until the next day, or next week.
Keep in mind that you can use both of these options at the same time. These settings can be accessed by your Filter Guardian in the online Member Center at https://secure.cvnt.net/member.