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 28:14

28:14 For their drink offerings, include half a hin of wine with each bull, one-third of a hin for the ram, and one-fourth of a hin for each lamb. This is the burnt offering for each month throughout the months of the year.