Septuplets are seven siblings born at the same time; a septennium is a period of seven years; and September is the… ninth month of the year. What gives? As you may expect, “sept” is a prefix with Latin roots that means “seven,” and it didn’t end up at the beginning of the word “September” by accident. The month of September was originally part of the Roman republican calendar, which was used in ancient Rome for hundreds of years before the debut of the Julian calendar in 46 BC...
