2.5. A black man dressed all in black, wearing a black mask, stands at a crossroads in a totally black-painted town. All of the streetlights in town are broken. There is no moon. A black-painted car without headlights drives straight toward him, but turns in time and doesn't hit him. (AL and RM wording; from How Come?)
2.5 answer: It's daytime; the sun is out.
2.5a. Elsa can turn off her bedroom light at the door to her bedroom, and still make it acroos the room and into bed before the room gets dark. (Math for Girls)
2.5a answer: It's daytime; the room is lit by a window.