Gregorian computus
E538057
Gregorian computus is the method used in the Gregorian calendar to calculate the date of Easter each year based on a refined solar and lunar cycle.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Gregorian computus canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5674215 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Gregorian computus Context triple: [Orthodox Paschalion, contrastsWith, Gregorian computus]
-
A.
Coptic Epact Numbers
Coptic Epact Numbers is a Unicode block that encodes the historic numeral system used for writing numbers in the Coptic script.
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B.
Gregorian Code
The Gregorian Code was an early 5th-century compilation of Roman imperial laws that served as a key precursor to later codifications such as the Theodosian Code.
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C.
Orthodox Paschalion
Orthodox Paschalion is the traditional method used by Eastern Orthodox churches to calculate the date of Easter and related movable feasts based on specific lunar and solar rules.
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D.
Julian calendar
The Julian calendar is an ancient solar calendar introduced by Julius Caesar in 45 BCE, historically used throughout Europe and still employed by some Eastern Christian churches for liturgical purposes.
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E.
Gregorian calendar (Western churches)
The Gregorian calendar (Western churches) is the internationally used solar dating system introduced in 1582 that most Western Christian churches follow for determining liturgical dates and feasts.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Gregorian computus Target entity description: Gregorian computus is the method used in the Gregorian calendar to calculate the date of Easter each year based on a refined solar and lunar cycle.
-
A.
Coptic Epact Numbers
Coptic Epact Numbers is a Unicode block that encodes the historic numeral system used for writing numbers in the Coptic script.
-
B.
Gregorian Code
The Gregorian Code was an early 5th-century compilation of Roman imperial laws that served as a key precursor to later codifications such as the Theodosian Code.
-
C.
Orthodox Paschalion
Orthodox Paschalion is the traditional method used by Eastern Orthodox churches to calculate the date of Easter and related movable feasts based on specific lunar and solar rules.
-
D.
Julian calendar
The Julian calendar is an ancient solar calendar introduced by Julius Caesar in 45 BCE, historically used throughout Europe and still employed by some Eastern Christian churches for liturgical purposes.
-
E.
Gregorian calendar (Western churches)
The Gregorian calendar (Western churches) is the internationally used solar dating system introduced in 1582 that most Western Christian churches follow for determining liturgical dates and feasts.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Easter calculation method
ⓘ
computus ⓘ |
| appliesTo |
Roman Catholic Church
ⓘ
linked to:
Roman Catholicism
Western Christianity ⓘ most Protestant churches ⓘ |
| assumesVernalEquinoxOn | 21 March ⓘ |
| basedOn |
lunar cycle
ⓘ
solar cycle ⓘ |
| calculates | date of Easter ⓘ |
| corrects | drift of vernal equinox in Julian calendar ⓘ |
| definesEasterAs | first Sunday after the Paschal full moon ⓘ |
| definesPaschalFullMoonAs | ecclesiastical full moon on or after 21 March ⓘ |
| differsFrom |
Julian computus
ⓘ
Orthodox Easter computation ⓘ |
| domain |
Christian liturgy
ⓘ
calendar science ⓘ |
| ensures | average year length close to tropical year ⓘ |
| formalizedIn | papal bull Inter gravissimas ⓘ |
| goal |
keep Easter near the astronomical full moon
ⓘ
keep Easter near the astronomical vernal equinox ⓘ |
| hasConsequence | different Easter date from Julian-based churches in many years ⓘ |
| implementedIn |
Easter tables
ⓘ
ecclesiastical tables ⓘ |
| introducedBy | Pope Gregory XIII ⓘ |
| introducedInYear | 1582 ⓘ |
| introducedWith |
Gregorian calendar reform
ⓘ
linked to:
Gregorian reform of 1582
|
| refines |
Julian computus
ⓘ
linked to:
Easter computus
|
| relatedTo |
Paschal full moon
ⓘ
computus ⓘ ecclesiastical calendar ⓘ epact tables ⓘ |
| timeScale | proleptic Gregorian calendar ⓘ |
| usedFor | determining movable feasts dependent on Easter ⓘ |
| usedIn |
Gregorian calendar
ⓘ
linked to:
Gregorian calendar (Western churches)
|
| uses |
Golden Number
ⓘ
Metonic cycle ⓘ algorithmic rules ⓘ century-based corrections ⓘ epact ⓘ leap year rules of Gregorian calendar ⓘ lunar correction ⓘ lunar cycle corrections every 300 years ⓘ lunar cycle corrections every 400 years ⓘ solar correction ⓘ table of epacts ⓘ |
| usesCalendar |
Gregorian calendar
ⓘ
linked to:
Gregorian calendar (Western churches)
|
| usesCycleLength | 19-year Metonic cycle ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Gregorian computus Description of subject: Gregorian computus is the method used in the Gregorian calendar to calculate the date of Easter each year based on a refined solar and lunar cycle.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.