Easter computus
E940858
Easter computus is the set of calendrical calculations historically used by Christian churches to determine the date of Easter each year.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Easter computus canonical | 1 |
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Christian liturgical practice
ⓘ
algorithm ⓘ calendar calculation method ⓘ |
| aimsTo | standardize the celebration date of Easter among Christians ⓘ |
| appliesTo | liturgical year ⓘ |
| assumes | fixed ecclesiastical equinox on March 21 ⓘ |
| basedOn |
ecclesiastical approximation of the vernal equinox
ⓘ
ecclesiastical full moon ⓘ lunar cycles ⓘ solar year ⓘ |
| constrainedBy | Council of Nicaea decision on Easter NERFINISHED ⓘ |
| defines | date of Easter Sunday ⓘ |
| developedIn |
Late Antiquity
NERFINISHED
ⓘ
Middle Ages NERFINISHED ⓘ |
| documentedIn | medieval computus manuscripts ⓘ |
| followsRule |
Easter is the Sunday after the Paschal full moon
NERFINISHED
ⓘ
Paschal full moon is the first full moon on or after the ecclesiastical vernal equinox ⓘ |
| hasVariant |
Alexandrian computus
NERFINISHED
ⓘ
Gregorian computus NERFINISHED ⓘ Julian computus NERFINISHED ⓘ Roman computus ⓘ |
| historicallyUsedBy |
Church of Alexandria
NERFINISHED
ⓘ
Church of Rome NERFINISHED ⓘ Eastern Orthodox Church NERFINISHED ⓘ Oriental Orthodox churches NERFINISHED ⓘ Western Church NERFINISHED ⓘ |
| influences |
date of Ascension
ⓘ
date of Pentecost ⓘ date of movable feasts ⓘ start of Lent ⓘ |
| involves |
19-year lunar cycle
ⓘ
Dominical letter ⓘ Golden Number ⓘ Metonic cycle NERFINISHED ⓘ Paschal full moon ⓘ epact calculation ⓘ leap year rules ⓘ |
| relatedTo |
Paschal tables
ⓘ
ecclesiastical calendar ⓘ |
| requires |
arithmetical operations
ⓘ
knowledge of leap year cycles ⓘ |
| studiedIn |
chronology
ⓘ
history of science ⓘ liturgical studies ⓘ |
| usedBy | Christian churches ⓘ |
| usedFor | determining the date of Easter ⓘ |
| usesCalendar |
Gregorian calendar (Western churches)
ⓘ
surface form:
Gregorian calendar
Julian calendar NERFINISHED ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.