I think I understand and while I appreciate the sentiment, and certainly your customers will too... I'd add this as an option, even on by default. Maybe a dark

I think I understand and while I appreciate the sentiment, and certainly your customers will too... I'd add this as an option, even on by default. Maybe a dark and snoozey landing page during those times? But to completely hard-lock your website at certain times seems reckless and unnecessary, tyrannical and misguided.