PURPORT

According to Vedic astronomical calculations, day and night are each divided into thirty ghatikas (twenty-four minutes), instead of twelve hours. Generally, each day and each night is divided into six parts consisting of five ghatikas. In each of these six portions of the day and night, the Lord may be addressed for protection according to different names. Lord Kesava, the proprietor of the holy place of Mathura, is the Lord of the first portion of the day, and Govinda, the Lord of Vrndavana, is the master of the second portion.