Here's why:

* Lunar phases: The moon's appearance changes throughout the month due to the angle at which we see the sunlit portion of the moon.

* Crescent phases: During the crescent phases (waxing or waning), only a sliver of the moon is illuminated by the sun.

* Visibility: Because the sun is illuminating a small portion of the moon, it's possible to see the crescent moon in the sky even during daylight hours, as long as the moon is positioned in a part of the sky where the sun's light isn't overwhelming.

In short, seeing the sun and moon out at the same time doesn't mean anything special. It's just a natural occurrence during the crescent moon phases.