The Abhijit Muhuratam and Amrit Kalam are deemed auspicious. If inauspicious time overlaps with auspicious time then the inauspicious period of time need to be removed from the auspicious time window. Hours that are past midnight are suffixed with subsequent day date. In Panchang day starts and ends with sunrise. https://www.birthastro.com/panchang/panchangam