You won't see any stars during the day, even on a cloudless day. Here's why:

* Sunlight: The sun's light is incredibly bright and overwhelms the much fainter light from stars.

* Atmosphere: The Earth's atmosphere scatters sunlight, making the sky appear blue. This scattered light further obscures the starlight.

You can only see stars at night when the sun has set and the sky is dark enough for their light to reach your eyes.