What if Shashthi Tithi falls on the same day as another tithi in the Panchang?

Sometimes two tithis can fall within the same calendar day if the lunar tithi begins and ends entirely within a 24-hour period. In such cases, the tithi that overlaps with the Kutup Muhurat (the auspicious midday window) is considered the operative tithi for Shradh purposes. Your Pandit will check the Panchang and advise you accordingly.