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Ελληνικά12 · Roman Gaul · a language that continued measuring time
Five years in bronze
The Gaulish calendar of Coligny
Six hundred Celtic words were engraved in Latin letters on a plate calculated for lunar and solar cycles.
Museum documentation · free public access, no account required.
Generated reconstruction · Declared visual hypothesis
Declared visual reconstruction for museographic context; it is not a photograph of the original nor documentary evidence.
History and context
One hundred and fifty fragments allow reconstructing part of a large bronze tablet with months and days distributed in a five-year cycle. The text is in Gaulish, written with the Latin alphabet during the Roman period.
The piece does not represent a frozen tradition before Caesar. It is an active and mixed legacy: local calendrical knowledge expressed through an imperial writing technology. Conquest and continuity fit on the same surface.
The incomplete plate measures about 90 by 148 centimetres and preserves the cycle thanks to the repetition of five years. Twelve ordinary months alternate twenty-nine and thirty days, and two intercalary months correct the drift with the seasons.
The fragments appeared in 1897 alongside hundreds of fragments of a statue of Mars and outside stratigraphic context. The joint discovery raises questions about deposition and destruction, but does not automatically explain the original function of the calendar.
Evidence and interpretation
Documented fact: Lugdunum dates the calendar to the second half of the 1st century CE, records 150 fragments, five years and about 600 Celtic words. Interpretation and caution: attributing its calculation exclusively to druids or knowing the exact institutional use exceeds the evidence. Documented expansion: Gaulish lunisolar calendar in Latin alphabet, second half of the 1st century CE, with about 600 different words preserved. Expanded interpretation and caution: The division by days and several abbreviations remain debated; do not turn it into a pan-European druidic calendar or date it before Rome.
Catalogue facts
- Narrative date
- Second half of the 1st century CE
- Location
- Coligny, Ain, France
- Material
- Engraved bronze
- Context
- Calendar table of Gaul under Roman rule
- Curatorial reading
- The documented fact and its interpretation appear separately in the evidence block.
- Dimensions
- Ca. 0.90 × 1.48 m
- Cycle
- 5 years, 60 ordinary months and 2 intercalary
- Find context
- 1897, out of context, alongside a fragmentary statue of Mars
- Documentary coverage
- 3 museum, heritage, primary corpus or research sources for this stop.
A closer look
About 1 min to read · 1 section. Further reading and sources · free access. Editorial review recorded: .
Marking the day with a peg
In front of each day is a small hole that received a peg. The table could therefore serve to physically follow the passage of time, moving a marker over the bronze. Each month was divided into two halves separated by the word atenoux, whose precise meaning remains debated. Some names retain the marks mat and anmat, interpreted in relation to favourable and unfavourable. These elements make the calendar a consultation instrument: it combines temporal organisation, Gaulish vocabulary and everyday interaction with its perforated surface.
Where it is held
Lugdunum · Museum and Roman Theatres
Item or group in the record · Documented collection
Official fact sheet of the Gaulish calendar of Coligny.
The holding institution is documented; public display may change. Check its official record before visiting.
Sources and references
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