September (Roman month) September (Roman month) September (from Latin "septem", "seven") or mensis September was originally the seventh of ten months on the ancient Roman calendar that began with March ("mensis Martius", "Mars' month"). It had 29 days. After the reforms that resulted in a 12-month year, September became the ninth month, but retained its name. September followed what was originally Sextilis, the "sixth" month, renamed "Augustus" in honor of the first Roman emperor, and preceded October, the "eighth" month that like September retained its numerical name contrary to its position on the calendar. A day was added to September in the mid-40s
Latin word order will often take precedence over a conjunction, and the following word order where the topic (in this case the grammatical subject) precedes "cum" "when" is fairly common: Not every sentence has a topic, but some present information which is entirely new. Pinkster gives the following as an example: Such sentences are sometimes called "presentative sentences" and often start with a verb. The focus is the new information, i.e. the message which is being conveyed to the listener. Often in Latin the topic comes first, and then the focus. For example, in the sentence below, the topic is "in the bathhouse"