Pilgrims do not travel to Muzdalifah on a separate day. The journey from Arafat to Muzdalifah occurs on the same day—the second day of Hajj (9th Dhul Hijjah), after sunset.
After standing in prayer at Arafat until sunset, pilgrims proceed to Muzdalifah, where they spend the night under the open sky, collect pebbles for the stoning ritual, and perform combined Maghrib and Isha prayers. At dawn (Fajr) on the third day (10th Dhul Hijjah), they depart for Mina.
This sequence is a core part of the Hajj rites, symbolizing unity, humility, and obedience.