The Organisation of the Roman Calendar

The Days, Weeks and Months of a Roman Year

© Natasha Sheldon

Oct 28, 2009
calender, Dave
The Roman calendrical year was divided into months that form the basis of the western calendar today. Their days and weeks were somewhat different.

The term calendar is taken from the calends or first day of the month and refers to the process of planning out the month and year ahead. The Roman year was organised according to months which were in turn split into nine day weeks and lucky and unlucky days which dictated what business could be conducted and when.

Lucky and Unlucky Roman Dates

On the first of every month, a herald would announce all the festivals for the month ahead including the days on which business could or could not be transacted. These days were listed as dies fasti, dies nefasti, dies comitiales, endotercisus and dies nefasti publici and were marked by different letters on the public calendars

  • Dies fasti. Represented by the letter F, this was a day when it was acceptable for legal action or business to be undertaken.
  • Dies nefasti. Represented by the letter N, this was an unlucky day for legal and political action.
  • Dies comitiales. Represented by a C, these were days when the citizen assemblies, the comitia could vote.
  • Endotercisus was a divided day. Represented by EN on the calendar, it represented a day when religious activities occupied the first and last portion of the day whilst the period between remained acceptable for business. Typically, in the morning an animal would be sacrificed and burnt its entrails read in the evening. During both these periods, it was unlucky or nefasti to conduct business. But the period in-between the two ceremonies was dies fasti.
  • Dies nefasti publici. Marked as NP on the calendar this marked specific special days, such as New Year’s Day or the ides of the month which were deemed unlucky for public and private business.

The Roman Week

The roman week did not follow the modern seven day format. Rather it was 9 days long and marked out the time between market days or nundinae when agricultural produce was typically brought into the town.

On the calendar for the month, the 8 days between nundinae were marked by the letters A-H with the market day itself assigned no letter at all. The day after market, the cycle began again. The uneven numbers involved meant that the roman days of the week varied from month to month and year to year

Months of the Roman Year

The months of the modern western calendar correspond with those of the Roman calendar. The Romans originally named their months after roman gods or their numbered sequence in the calendar. Later, certain months were renamed to commemorate Roman leaders and emperors.

The Roman year originally ran as follows:

  • March. This was the original first month of the year. Timed to correspond with the vernal equinox, it was named after the god mars.
  • April. Otherwise known as Aprilis, this month was associated with the goddess Venus, originally a roman garden goddess. The name may be derived from the Latin aperire meaning ‘to open’, a reference to the opening of buds or the word for ‘other’ alius.
  • May. Known as Maius, this month was named after Maia the Roman goddess of growth.
  • June. Junius in Latin, this month was sacred to Juno
  • July. Originally known as Quinctilis as it wasthe fifth month of the Roman calendar, this month was renamed Julius after the assassinated of Julius Caesar in 44BC, as he was born on its twelfth day.
  • August. Originally known as sextilis as it was the sixth month of the Roman year, this month was renamed Augustus in 8BC to commemorate the achievements of the emperor Augustus.

The next four months remained named after their original position in the Roman calendar:

  • September. Known as Septem to the Romans as it was the seventh month of the year.
  • October. Or Octo to reflect its original position as the roman’s eight month
  • November. Novem or the ninth month
  • December. Decem-the tenth month of the Roman year. December marked the end of the Roman agricultural year.

With the end of the year in December, there was originally an uncounted gap until the vernal equinox marked the recommencement of the agricultural cycle. Legend has it that this changed that during the reign of Numa Pompilius, the second King of Rome, when two further months were added to the calendar to fill the vacuum of winter. They were January and February.

  • January. Named after Janus, the god of gateways, thresholds, beginnings and ends, this became the first month of the roman year in 153BC to correspond with the election of consuls and magistrates to political office.
  • February. Februarius was named after the festival of Februa a purification feast held during this month

Sources

Ovid’s Fasti (2000) Trans and edited by A J Boyle and R D Woodard. Penguin Books: London

The Oxford Classical Dictionary

Chambers Book of Days (2004). Chambers Harrap Publishers: Edinburgh


The copyright of the article The Organisation of the Roman Calendar in Roman History is owned by Natasha Sheldon. Permission to republish The Organisation of the Roman Calendar in print or online must be granted by the author in writing.


calender, Dave
       


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