Grand jury is so named because traditionally it has greater number of jurors than trial jury, called a petit jury (from the French word petit meaning small).
Although mice tend to come out in the night when most of the occupants of the house are asleep or immobile. This allows them to stealthily infiltrate any of your food bags, crumbs etc. During the day time, mice will normally not come out, but if opportunities exist then they surely can.
The Moon that we sometimes see during the day is the very same Moon that we sometimes see at night. We can only ever see the same side of the Moon, whether we see the Moon during the day or during the night. The dark regions that one can see on the Moon at night can also be seen during the day.