I saw a very large cigar shaped craft passing overhead.

The craft was very large, but I can not say how large as I do not know what its altitude was. It was above the clouds. There was no sound or lights. It was lit by the moon light. It moved across the sky at a steady speed. It was clearly visible except when it went above a cloud. I was sitting in a chair, and I watched it for about 30 seconds. It was long and cylindrical. The sky was clear except for a few clouds. It was traveling in a west to east direction. I lost sight of it after it passed over my house.