Chapter 42 mentions multiple calendar systems and specific timings for Baba's passing. What are these different references and what is their significance?

Chapter 42 meticulously documents the day of Sai Baba's Mahasamadhi using several calendar references to provide a complete and historically precise record. It specifies the Hindu calendar details: Shaka year 1840, the festival of Vijayadashami, and the bright half of the month (Shukla Paksha). It also aligns this with the Islamic calendar, noting it was the 9th day of the Muslim month, on the eve of Moharram. As Chapter 42 further clarifies, there is a detailed discussion of the lunar day (tithi), explaining that the departure occurred during Ekadashi, even though the day was celebrated as Dashami. This multi-faceted approach underscores the universal reverence for Baba across different communities and provides a robust, verifiable anchor for this pivotal event.