While October may not be home to Thanksgiving in the United States, Americans have much to be thankful for in the tenth month of the calendar year. Fall temperatures tend to be at their most accommodating in October, which also happens to be home to Halloween. Those are not the only interesting and fun facts about this popular month. October has something of a misleading name. Licensed drivers undoubtedly know that the prefix “octo” means eight, which is why Stop signs are octagons. So why does October, the tenth month of the year, have a name that suggests it should be the eighth month of the year? That peculiarity can be traced to the early Roman calendar, which featured just 10 months, the eighth of which was October. The Romans eventually converted to a 12-month calendar, and October kept its name despite becoming the tenth month of that calendar.