ottobre

Ottobre is October, from Latin October, whose name contains the number eight from the old Roman year. In acts it follows the day and del mese di: addì sei del mese di ottobre, on the sixth of October. The abbreviation is ott.

Its first letters match otto, eight, ottanta, eighty, and ottavo, eighth, so a date like addì otto del mese di ottobre needs a careful look. Ottocento in a year means eight hundred, not October.