The moon and sun frequently shine in our sky at the same time. For about one week out of four, the earth is between the moon and sun. During this week, we see the moon at night. When the moon is at the other extreme, between us and the sun, we don't see the moon very well at all. The remaining time, about two months out of four, the moon and sun share our view in the sky to some degree. At certain times, you can see a very bright moon when the sun is still out in force.