Roman calendar
Ancient Italian timekeeping
The Roman calendar was the dating system used in ancient Rome, evolving through several forms before Julius Caesar's reforms produced the Julian calendar in 46 BCE.
The original Roman calendar had ten months, with March as the first month—which explains why September through December, despite their prefixes, are the ninth through twelfth months.
The Roman calendar's influence persists in our month names.
- pontifex maximusRome's chief religious official
- SaturnaliaRome's December harvest celebration
- intercalationInsertion between existing elements
- ancient RomeEarly Italian empire city
- feastElaborate ceremonial meal
Numa Pompilius · leap year · nones · new moon · Ides · Ides of March · religious observance · forum · Julian · annals · pontifex · temples · March · solar · lunar · January · market day · republic
Roman calendarGregorian calendar
Current global date system
lunar calendar · Chinese calendar · Julian calendar · Islamic calendar · Hebrew calendar