The Pleiades star cluster is not visible in the winter sky. It's a constellation primarily visible in the autumn and early winter months in the Northern Hemisphere.

Here's why:

* Seasonal Visibility: The Earth's rotation and orbit around the Sun cause different constellations to be visible at different times of the year. The Pleiades are most prominent in the evening sky during autumn and early winter.

* Location in the Sky: As winter progresses, the Pleiades gradually move lower in the western sky and eventually set below the horizon.

* Northern Hemisphere: The Pleiades are visible from the Northern Hemisphere, but their visibility may vary depending on your location.

If you're looking to see the Pleiades, be sure to check out the night sky during autumn and early winter.