the first day of the first month. Note the six events which took place on that day (Genesis 8:13).
Related Commentaries of 2 Chronicles 29:17
2 Chronicles 29:17
17 Now they began on the first day of the first month to sanctify, and on the eighth day of the month came they to the porch of the LORD: so they sanctified the house of the LORD in eight days; and in the sixteenth day of the first month they made an end.