What were the corresponding Hindu and Muslim calendar dates for Sai Baba's Mahasamadhi, according to the text?

Chapter 42 of the Sai Satcharitra meticulously records the date of Baba's passing using multiple calendar references. According to the Hindu calendar, the event took place in the Shaka year 1840, on the day of Vijayadashami, which is the tenth day of the bright half of the month (Shukla Paksha). The text also notes this was during the first month of the sun's southern transit (Dakshinayan). Concurrently, as per the Muslim calendar, this day was the 9th day of the month, corresponding to the eve of Moharram, which the text refers to as the night of 'Kattal'.