>>> "oct" means 8.
>> Right. December used to be the tenth month.
> ------------- And Apri is Latin for "cruel".
this last line ------- Thanks for the puzzle !
https://en.wiktionary.org/wiki/apri (Italian and Latin)
https://www.etymonline.com/word/april
April
fourth month, c. 1300, aueril, from Old French avril (11c.), from Latin (mensis) Aprilis, second month of the ancient Roman calendar, from a stem of uncertain origin and meaning, with month-name suffix -ilis as in Quintilis, Sextilis (the old names of July and August).
Perhaps based on Apru, an Etruscan borrowing of Greek Aphrodite. Or perhaps *ap(e)rilis "the following, the next," from its place as the second month of the old Roman calendar, from Proto-Italic *ap(e)ro-, from PIE *apo- "away, off" (see apo-; compare Sanskrit aparah "second," Gothic afar "after").
Old folk etymology connected it with Latin aperire "to open."