When and how did Sai Baba attain his final departure or Nirvana?

According to the provided text, Sai Baba attained Nirvana, his final departure, in the year nineteen hundred and eighteen. As detailed in Chapter 33, he chose the auspicious festival day of Vijayadashami, also known as Dussehra, as the day to make the offering of his own body. This significant event preceded the establishment of his Samadhi, or final resting place, which devotees would later visit for Darshan.