The fasting day - A fasting day. Baruch was to wait for a proper opportunity Jeremiah 36:9.
Related Commentaries of Jeremiah 36:6
Jeremiah 36:6
6 Therefore go thou, and read in the roll, which thou hast written from my mouth, the words of the LORD in the ears of the people in the LORD'S house upon the fasting day: and also thou shalt read them in the ears of all Judah that come out of their cities.