"Well behaved women rarely make history"

The calendar we use today is called the Gregorian calender, which was adopted by Pope Gregory in the 1500s. The Gregorian calendar was based on what was thought to be the Julian calendar, adopted by Julius Caesar in 45 B.C. However,  while the credit goes to Caesar, few historians have noticed that his calendar was only adopted after spending time in Egypt with Cleopatra.

Cleopatra VII was not merely a femme fatale. She was an intelligent woman, easily one of the Marie Curies or Sally Rides of her day. In addition to being an expert on cosmetics and other traditional women's knowledge, as well as a polyglot, Cleopatra was incredibly astute in the sciences as well as mathematics. Thus, Cleopatra grew up knowing much about astronomy, and the more accurate solar calendar that had long been used by her adopted people, the Egyptians.

Cleopatra's favorite astronomer was a Greek known as Sosigenes who had created a much more reliable solar calendar than the one used by rhe Romans. The lunar based Roman calendar was often inaccurate and often used for political purposes. Indeed, two of our summer months-- July and August-- were named for Roman emperors-- Julius Caesar and Augustus Caesar respectively. In light of my fictional plot of Cleopatra's victory, I have had the name of August be changed to Romanus, for Marc Antony's title as emperor in the sequel.