Albert Barnes Commentary Numbers 29:7-11

"And on the tenth day of this seventh month ye shall have a holy convocation; and ye shall afflict your souls: ye shall do no manner of work; but ye shall offer a burnt-offering unto Jehovah for a sweet savor: one young bullock, one ram, seven he-lambs a year old; they shall be unto you without blemish; and their meal-offering, fine flour mingled with oil, three tenth parts for the bullock, two tenth parts for the one ram, a tenth part for every lamb of the seven lambs: one he-goat for a sin-offering; besides the sin-offering of atonement, and the continual burnt-offering, and the meal-offering thereof, and their drink-offerings." — Numbers 29:7-11 (ASV)

The offering on the great Day of Atonement was the same as that just specified. The great ceremonies of the day are described in Leviticus 16:0.