What was the routine for the Chavadi procession and when did this practice begin?

According to the narrative in Chapter 37, Sai Baba followed a strict routine of sleeping at the Chavadi every other day, alternating with nights spent in the Masjid. This continued until His Samadhi. The specific worship, bhajan, and adoration as part of the Chavadi celebrations began on December 10th, 1910. On the designated nights, a bhajan group would gather at the Masjid and perform until midnight. The procession itself was a grand affair with music, decorations, and the participation of many devotees, all drawn to Baba like iron to a powerful magnet.