July, August, and Neronius?
When Julius Caesar took control of the Roman government, he decided to reform the calendar. Because it was a lunar calendar—based on complete cycles of the moon—it had fluctuated widely for centuries. Some years had as few as 355 days while others nudged 380, often seemingly by whim. After lengthy consultations with the Egyptian astronomer Sosigenes, Caesar established a calendar that is virtually the same one we use today. The lengths of the months alternated between 30
and 31 days, except February which had 29. The new calendar came into effect on January 1, 45 BCE (Before the Common Era). A grateful Roman Senate immediately changed the name of the month of Quintilis—Julius Caesar’s birth month—to July in his honor. As is the case today, it had 31 days. Caesar had only one year to enjoy “his” month, as he was assassinated the following March.
His successor was his grand-nephew Octavian, who took the name of Augustus Caesar when he officially became the first Roman emperor. In 8 BCE the Senate decided that he also deserved a month. Because several noteworthy events during Augustus’s reign had occurred in Sextilis, the month following July, they chose it. Big problem. Sextillis had only 30 days. No way would the Senate allow Augustus to be “inferior” to his great-uncle in any way. So it took a day from February and tacked it on at the end of August. That created another problem. Three consecutive months—July, August, and September—were now 31 days long. The fix was simple: the Senate simply flipped the lengths of the remaining four months. September and November went from 31 days to 30, while October and December bulked up to 31.
The Senate wasn’t finished with its tinkering. Nearly 70 years later, it honored the notorious emperor Nero by changing Aprilis to Neronius. The new name never gained traction. Nero. who had murdered his brother, mother, and wife, committed suicide in 68 CE (Common Era). The Senate—undoubtedly relieved at his demise—hastily returned Neronius to its original name.
Jim Whiting has written on many subjects. Check out his page on Amazon.com
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