Parallel
Exodus 13:10
Rahlfs Septuagint (1935) · Berean Standard Bible
καὶ φυλάξεσθε τὸν νόμον τοῦτον κατὰ καιροὺς ὡρῶν ἀφ᾿ ἡμερῶν εἰς ἡμέρας
Therefore you shall keep this statute at the appointed time year after year.