That can be done at DNS level in dnscrypt-proxy: https://github.com/DNSCrypt/dnscrypt-proxy/wiki/Filters#time-based-filters https://github.com/DNSCrypt/dnscrypt

That can be done at DNS level in dnscrypt-proxy: https://github.com/DNSCrypt/dnscrypt-proxy/wiki/Filters#time-based-filters https://github.com/DNSCrypt/dnscrypt-proxy/wiki/Filters#time... At DNS level, not just websites will be blocked, but also apps.