A full day hike between April until November may be a nice 3000-3500 m summit, for example Kangarchal or Yaan for fit and fast walkers; or a gentler pace up to one of many remote pastoral settlements such as Noosha, Lashm and others in or above the forest line.
In winter the area receives quite a lot of snow, but it is still possible to trek and reach the summits provided you have the required equipment and allow extra time.