Phases of the Moon and its orbit around the Earth (1).
Everything (almost) in the solar
system rotates or orbits
counterclockwise, as seen from the
The illumination of the Earth and
the moon will be almost the same,
since the sun is so far away that
both receive light from (almost)
the same direction.
It takes 4 weeks for the moon to
complete an orbit of the earth.
The moon is
other words, we always see the
same face, although the
illumination pattern we see
How long is a lunar day?
From our text:
Horizons, by Seeds