Pongal, the harvest festival celebrated in South India, especially in Tamil Nadu, is on January 14, 2018. Some people perform the puja and cooking of pongal as per auspicious time during the sunrise. Pongal Puja time on January 14, 2018 is from 7:39 AM.
Note - all people do not follow auspicious time. Most people perform the ritual of cooking of Pongal after sunrise. The auspicious time in a particular region is based on local panchang or is calculated by the priest in the local temple.