In the TLM, The Confiteor is said near the beginning of Mass, just before the priest ascends the altar. The first recitation is done by the priest, immediately followed by the altar boys’ recitation. It is followed by the Introit and the Kyrie.
If I am not mistaken, there are some (the SSPX, I think), who recite it once more, just before Communion. I do hope that someone will correct me if I am wrong.
In the N.O., the translation of the original Latin is imperfect, but when it is said, it is also said near the beginning of Mass. Most of the time, though, the Confiteor is omitted in favor of the lector saying a series of penitential statements such as, “Lord, we have sinned against you,” and the people replying, “Lord have mercy.” It is followed by the Kyrie.
In fact, I haven’t heard the Confiteor at a NO Mass in many years; practically all the churches I’ve been to use the second form. Needless to say, I prefer the original.
Regards,
Thank you once again for your answer.