- Aug 11 BC The Mesoamerican Long Count calendar, used by several pre-Columbian Mesoamerican civilizations, notably the Mayans, begins
- Aug 13 BC According to the Lounsbury correlation, the start of the Mayan calendar
- Sep 6 BC Date Maya/Mesoamerican Long Count Calendar starts dating from (as corresponds to the Julian Calendar).
Augustus Caesar
Caligula
Constantine the Great
Julius Caesar
Mark Antony
Nero