CLARIFICATION: We are not required to have our blinds closed all the time, just during a lock-down, and we also just naturally do it when there's some intoxicated person outside (not a great neighborhood). I hope I didn't confuse anyone! I'm sorry I wasn't more clear. We are required to generally have the ability to use, and actually use, natural light sources.
I perfectly understand. I have the bulletin board sliders that cover the windows, we close them sometimes during our day as whatever is outside can sometimes very distracting for various reasons for our kids.