Question

why is moon sometime out in the day ?

Answer 1

it depends upon the phases of the moon ..
when u see moon Moon over a month, you will notice it gradually changing shape, from a crescent to a full circle, then back to a crescent again. If you pay close attention, you will notice that its position in the sky also changes.

Answer 2

Primarily, there are two reasons why we sometimes see the moon during the day. First of all, the moon is bright and close enough to be seen against the blue hue of the sky. Secondly, the duration for which it is above the horizon of Earth coincides with the sun, making it possible to be seen during the daytime.