October is derived from the word octave (that is, a series of eight8 - c, d, e, f, g, a, h, c tones of the diatonic scale, the interval between the first and eighth tones in it)

The diatonic scale starts on C and ends an octave higher/ascension on C, so 33 (phonetic: see see 😂).

There is another possibility - the diatonic scale has also the opposite direction of tones, i.e. down...🔥🔥🔥

The first will be last and the last will be first.
Mirror reflection.