'Year old' in the Bible

Then tell the Israelites: 'Take a male goat for a sin offering and a calf and lamb, both a year old and flawless, for a burnt offering,

"'When the days of her purification are completed for a son or for a daughter, she must bring a one year old lamb for a burnt offering and a young pigeon or turtledove for a sin offering to the entrance of the Meeting Tent, to the priest.