Dusk falls (end of civil twilight) tonight at 6:45. The new moon makes for a very dark sky, so equip your trick or treaters with a flashlight and make sure they are otherwise easy for motorists to see.
That dark sky is great for sidewalk astronomy. If you have a telescope gathering dust under a bed or in a closet somewhere, get it out and enjoy the night sky. You don’t have to be an expert to share either. I like to have a step stool handy for smaller trick-or-treaters and a card table to set plastic pumpkins or masks while looking through the telescope.