This year, Diwali should be celebrated on the night of October 20, as per the Hindu scriptures and the traditional Panchang. The most auspicious time for Lakshmi Puja falls on this date, making it the scripturally correct choice. While some calendars or sources may mention October 21, that timing does not align with the proper tithi (Hindu lunar date). Observing Diwali on October 20 ensures that all rituals are performed at the right time, attracting divine blessings, prosperity, and spiritual harmony.