The feast of tabernacles seems to be mentioned synecdochically for all the solemnities of this month, whereof this was the most eminent and most lasting. Otherwise it is not probable that they would neglect the day of atonement, which was so severely enjoined, Leviticus 23:27-29, and was so exceeding suitable to their present condition: See Poole on "Ezra 3:6". The daily burnt-offerings, Heb. burnt-offerings day by day, i.e. every day of that feast they offered as many sacrifices as were prescribed; of which see Numbers 29:13, &c.
Related Commentaries of Ezra 3:4
Ezra 3:4
4 They kept also the feast of tabernacles, as it is written, and offered the daily burnt offerings by number, according to the custom, as the dutyb of every day required;