New Revised Standard Version
These are the appointed festivals of the LORD, which you shall celebrate as times of holy convocation, for presenting to the LORD offerings by fire—burnt offerings and grain offerings, sacrifices and drink offerings, each on its proper day—

Contemporary English Version
I have chosen these festivals as times when my people must come together for worship and when animals, grain, and wine are to be offered on the proper days.

New American Bible
These, therefore, are the festivals of the LORD which you shall declare holy days, in order to offer as an oblation to the LORD burnt offerings and grain offerings, sacrifices and libations, as prescribed for each day,

Douay-Rheims Bible
These are the feasts of the Lord which you shall call most solemn and most holy, and shall offer on them oblations to the Lord: holocausts and libations according to the rite of every day.

These are the feasts of the Lord which you shall call most solemn and most holy, and shall offer on them oblations to the Lord: holocausts and libations according to the rite of every day.

the feasts

Leviticus 23:2,4 Speak to the children of Israel, and thou shalt say to them: These are the feasts of the Lord, which you shall call holy. . . .

Deuteronomy 16:16,17 Three times in a year shall all thy males appear before the Lord thy God in the place which he shall choose: in the feast of unleavened bread, in the feast of weeks, and in the feast of tabernacles. No one shall appear with his hands empty before the Lord: . . .

every thing

Ecclesiastes 3:1 All things have their season, and in their times all things pass under heaven.