Parallel
Numbers 9:3
Rahlfs Septuagint (1935) · Berean Standard Bible
τῇ τεσσαρεσκαιδεκάτῃ ἡμέρᾳ τοῦ μηνὸς τοῦ πρώτου πρὸς ἑσπέραν ποιήσεις αὐτὸ κατὰ καιρούς κατὰ τὸν νόμον αὐτοῦ καὶ κατὰ τὴν σύγκρισιν αὐτοῦ ποιήσεις αὐτό
You are to observe it at the appointed time, at twilight on the fourteenth day of this month, in accordance with its statutes and ordinances.”