'First Day' in the Bible

And Ezra the priest put the law before the meeting of the people, before the men and women and all those who were able to take it in, on the first day of the seventh month.

And day by day, from the first day till the last, he was reading from the book of the law of God. And they kept the feast for seven days: and on the eighth day there was a holy meeting, as it is ordered in the law.