epochReference
P21934
predicate
Indicates a temporal relationship where one time expression is interpreted relative to a specified reference epoch or baseline time.
All labels observed (16)
| Label | Occurrences |
|---|---|
| epochReference canonical | 6 |
| referenceEpoch | 6 |
| epochEvent | 4 |
| epochOfCoordinates | 3 |
| astrometricReferenceEpoch | 2 |
| epochAssociatedWith | 1 |
| epochNotation | 1 |
| epochStart | 1 |
| epochTimeScale | 1 |
| hasEpochRelation | 1 |
| laterEpochUsedInRevisions | 1 |
| locatedInEpoch | 1 |
| originalEpoch | 1 |
| referenceEpochDefinition | 1 |
| referenceEpochLabel | 1 |
| refersToEpoch | 1 |
Description generation (PDg)
The one-sentence description above was generated by prompting gpt-5.1 with the predicate name and this instruction.
Instruction
Given a predicate that represents a relationship or action between entities, generate a one-sentence description explaining its meaning. # Instructions Focus on describing the relationship, not the entities themselves. # Response Format Begin the description with \' Indicates...\'
Input
Predicate: epochReference
Generated description
Indicates a temporal relationship where one time expression is interpreted relative to a specified reference epoch or baseline time.
Sample triples (32)
| Subject | Object |
|---|---|
| International Atomic Time | geocenter ⓘ |
| Coptic calendar |
Diocletian persecution
via predicate surface "epochAssociatedWith"
ⓘ
linked to:
Diocletianic Persecution
|
| National Spatial Reference System | time-dependent coordinates via predicate surface "referenceEpoch" ⓘ |
| French Republican Calendar | proclamation of the French Republic via predicate surface "epochEvent" ⓘ |
| Rudolphine Tables | 1600 via predicate surface "epochOfCoordinates" ⓘ |
| TAI | TAI via predicate surface "epochTimeScale" ⓘ |
|
Terrestrial Time
linked to:
TT
|
TAI + 32.184 seconds ⓘ |
| Islamic lunar calendar |
Hijra of Prophet Muhammad from Mecca to Medina
via predicate surface "epochEvent"
ⓘ
linked to:
Hijrah of Prophet Muhammad
|
| International Terrestrial Reference System | defined at a conventional reference epoch via predicate surface "referenceEpoch" ⓘ |
| Zīj-i Sultānī | 15th century via predicate surface "epochOfCoordinates" ⓘ |
| proleptic Gregorian calendar | can be mapped to Julian day numbers via predicate surface "hasEpochRelation" ⓘ |
| Gaia Data Release 2 | J2015.5 via predicate surface "astrometricReferenceEpoch" ⓘ |
| Gaia Early Data Release 3 | J2016.0 via predicate surface "referenceEpoch" ⓘ |
| Gaia Data Release 3 | J2016.0 via predicate surface "astrometricReferenceEpoch" ⓘ |
|
std::time::UNIX_EPOCH
linked to:
std::time module
|
1970-01-01T00:00:00Z via predicate surface "epochStart" ⓘ |
|
Hubble constant
linked to:
Hubble constant H₀
|
present cosmological time via predicate surface "refersToEpoch" ⓘ |
| 28978 Ixion | J2000 ecliptic via predicate surface "locatedInEpoch" ⓘ |
| NGC | B1855 via predicate surface "originalEpoch" ⓘ |
| NGC | J2000.0 via predicate surface "laterEpochUsedInRevisions" ⓘ |
| Barycentric Dynamical Time | Julian Date ⓘ |
| Universal Time 1 | Greenwich midnight ⓘ |
| Besselian year |
Besselian epoch
via predicate surface "epochNotation"
ⓘ
linked to:
Besselian year
|
| GLONASS Time | UTC epoch ⓘ |
| Malayalam calendar | founding of Kollam city via predicate surface "epochEvent" ⓘ |
| Tycho Brahe’s star catalogue | year 1600 via predicate surface "epochOfCoordinates" ⓘ |
| Baháʼí Era | Báb’s announcement of his mission via predicate surface "epochEvent" ⓘ |
|
International Celestial Reference Frame
linked to:
ICRF
|
J2000.0 via predicate surface "referenceEpoch" ⓘ |
| ITRF2020 | 2020.0 via predicate surface "referenceEpoch" ⓘ |
| North American Terrestrial Reference Frame 2022 | 2020 via predicate surface "referenceEpochLabel" ⓘ |
| NATRF2022 | coordinates specified at reference epoch 2020.00 via predicate surface "referenceEpochDefinition" ⓘ |
| North American-Pacific Geopotential Datum of 2022 | 2022 via predicate surface "referenceEpoch" ⓘ |
| Alfonsine Tables | era of Alfonso X ⓘ |