Numbers 1:18

1:18 and they assembled the entire community together on the first day of the second month. Then the people recorded their ancestry by their clans and families, and the men who were twenty years old or older were listed by name individually,

Numbers 28:8

28:8 And the second lamb you must offer in the late afternoon; just as you offered the grain offering and drink offering in the morning, you must offer it as an offering made by fire, as a pleasing aroma to the Lord.