The phase of the moon depends on the angle between the line from the sun to the earth and the angle from the earth to the moon. When that angle is 0°, the moon is between the earth and the sun, so we see a new moon; when it's 180°, the moon is on the opposite side of the earth to the sun, so we see a full-moon; when the angle is between these two extremes, we see some fraction of the moon's surface in shadow. The variation of phases happens across one full orbit.

The same holds true for a geostationary moon. Since the angle between the two lines varies as the moon follows the earth's rotation, we still see phases. Now, the moon's full orbit takes one day, so you'll see the full range of phases during a single day. If you're close to the point the moon orbits above, you'll see the new moon at solar noon and the full moon at midnight, with waxing in the afternoon and evening, and waning through the night and morning. As you move farther away from that point, the times will change because your angle of view will be different. And, of course, if you're on the other side of the planet, you won't see the moon at all.

The phase of the moon depends on the angle between the line from the sun to the earth and the line from the earth to the moon. When that angle is 0°, the moon is between the earth and the sun, so we see a new moon; when it's 180°, the moon is on the opposite side of the earth to the sun, so we see a full-moon; when the angle is between these two extremes, we see some fraction of the moon's surface in shadow. The variation of phases happens across one full orbit.

The same holds true for a geostationary moon. Since the angle between the two lines varies as the moon follows the earth's rotation, we still see phases. Now, the moon's full orbit takes one day, so you'll see the full range of phases during a single day. If you're close to the point the moon orbits above, you'll see the new moon at solar noon and the full moon at midnight, with waxing in the afternoon and evening, and waning through the night and morning. As you move farther away from that point, the times will change because your angle of view will be different. And, of course, if you're on the other side of the planet, you won't see the moon at all.

The phase of the moon depends on the angle between the line from the sun to the earth and the angle from the earth to the moon. When that angle is 0°, the moon is between the earth and the sun, so we see a new moon; when it's 180°, the moon is on the opposite side of the earth to the sun, so we see a full-moon; when the angle is between these two extremes, we see some fraction of the moon's surface in shadow. The variation of phases happens across one full orbit.

The same holds true for a geostationary moon. Since the angle between the two lines varies as the moon follows the earth's rotation, we still see phases. Now, the moon's full orbit takes one day, so you'll see the full range of phases during a single day. If you're close to the point the moon orbits above, you'll see the new moon at solar noon and the full moon at midnight. As you move farther away from that point, the times will change because your angle of view will be different. And, of course, if you're on the other side of the planet, you won't see the moon at all.

The phase of the moon depends on the angle between the line from the sun to the earth and the angle from the earth to the moon. When that angle is 0°, the moon is between the earth and the sun, so we see a new moon; when it's 180°, the moon is on the opposite side of the earth to the sun, so we see a full-moon; when the angle is between these two extremes, we see some fraction of the moon's surface in shadow. The variation of phases happens across one full orbit.

The same holds true for a geostationary moon. Since the angle between the two lines varies as the moon follows the earth's rotation, we still see phases. Now, the moon's full orbit takes one day, so you'll see the full range of phases during a single day. If you're close to the point the moon orbits above, you'll see the new moon at solar noon and the full moon at midnight, with waxing in the afternoon and evening, and waning through the night and morning. As you move farther away from that point, the times will change because your angle of view will be different. And, of course, if you're on the other side of the planet, you won't see the moon at all.