Mercedonius

E531233

Mercedonius was an occasional leap month in the early Roman calendar, inserted to realign the lunar-based year with the solar cycle.

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All labels observed (1)

Label Occurrences
Mercedonius canonical 1

Statements (38)

Predicate Object
instanceOf intercalary month
month in the Roman calendar
abolishedBy Julian calendar NERFINISHED
associatedWith Numa Pompilius NERFINISHED
basedOn lunar phases
calendarRole intercalation to approximate 365-day solar year
calendarType lunisolar calendar
category Ancient Roman religion
Roman timekeeping
controlledBy Pontifex Maximus NERFINISHED
culturalContext Roman religion and festival cycle
effectOnYearLength extended the Roman year beyond 355 days
etymology possibly derived from Latin "merces" (wages or payment)
followedBy March
frequency occasionally inserted
function correct drift of the Roman calendar
realign lunar year with solar year
introducedBy Roman pontiffs NERFINISHED
languageOfName Latin NERFINISHED
length approximately 27 days in some reconstructions
sometimes reconstructed as 22 or 23 days
mentionedBy Censorinus NERFINISHED
Macrobius NERFINISHED
politicalAspect intercalation could be manipulated for political advantage
positionInYear inserted after 23 February in some reconstructions
inserted between February and March
precededBy February NERFINISHED
purpose keep Roman festivals in correct season
synchronize civic calendar with agricultural year
relatedTo Roman Republican calendar NERFINISHED
replacedBy Julian calendar reform NERFINISHED
standardYearContext Roman 355-day common year
status obsolete
timePeriod Roman Republic
uncertainty exact length is debated among scholars
exact rules of insertion are not securely known
usedIn early Roman calendar
usedUntil 46 BC (introduction of Julian calendar)

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.