Can you provide a detailed, step-by-step account of the events leading up to Sai Baba's departure for the Chavadi on procession nights?

Based on the detailed account in Chapter 37, the sequence of events began with the bhajan group assembling at the Masjid, where they would sing devotional songs until midnight. Devotees played various instruments while Baba was seated. The area would be elaborately decorated. A pivotal moment was the arrival of Tatya Patil, as Baba would wait for him before moving. Tatya would help Baba to his feet. Baba would then perform a ritual by the firewood and extinguish a flame. After this, Tatya would place a golden-bordered shawl on Baba. As soon as Baba started to go, a grand procession would erupt with musical instruments and fireworks.