Charles Ellicott Commentary Nehemiah 8:18

"Also day by day, from the first day unto the last day, he read in the book of the law of God. And they kept the feast seven days; and on the eighth day was a solemn assembly, according unto the ordinance." — Nehemiah 8:18 (ASV)

According to the manner. —For the Azereth, or supplementary feast day, see Leviticus 23:36.