At the time of the calendar reform, the months that are now called July and August were called Quintilis and Sextilis. The Julian calendar came into use on Janu

At the time of the calendar reform, the months that are now called July and August were called Quintilis and Sextilis. The Julian calendar came into use on January 1, 45 BC. July was renamed in 44 BC (the year of Caesar’s assassination), and August in 8 BC.