What is the minimum day required to fully explore Ladakh?

A minimum of 5 days is good for covering all the important places in Ladakh.

The itinerary for the trip:

Day 1 Reach Leh – Get Acclimatize; take a visit to shanti stupa

Day 2 Roam around Leh , visit Leh palace or instead go to magnetic hill and drass war memorial

Day 3 Visit Nubra Valley

Day 4 Back To leh relax and do some sightseeing (or go to Pangong Tso)

Day 5 – visit Hemis Monasteries and come back to Leh