First, the position of the sun and the moon: the moon itself does not shine, but it can reflect the sun. When the sun rises or sets, its light is weak, and the reflected light of the moon can be seen in the bright sky.
Second, the relative position of the earth and the moon: the moon revolves around the earth, while the earth revolves around the sun, which determines that the position of the moon relative to the sun and the earth is constantly changing.
When the moon is not far from the sun, it is called the first quarter moon or the second quarter moon in astronomy. In those days before and after the first quarter moon and the second quarter moon, the moon will appear in the sky at the same time as the sun in broad daylight, sometimes in the east and sometimes in the west of the sun.
When January is the first quarter moon, the moon is far from the sun. From our earth's point of view, the moon will rise in the morning, and in the afternoon, the moon has risen to a higher height. At this time, as long as the weather is good, you can see the faint moon in the afternoon.
At noon, when the sun is the highest, the reflected light of the moon will be submerged by sunlight, so it is difficult for us to see the moon during the day.