epochReference

P21934
predicate

Indicates a temporal relationship where one time expression is interpreted relative to a specified reference epoch or baseline time.

Try in SPARQL

All labels observed (16)

Label Occurrences
epochReference canonical 6
referenceEpoch 6
epochEvent 4

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 Diocletianic Persecution via predicate surface "epochAssociatedWith" ⓘ
surface form: Diocletian 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" ⓘ
TT
surface form: Terrestrial Time
TAI + 32.184 seconds ⓘ
Islamic lunar calendar Hijrah of Prophet Muhammad via predicate surface "epochEvent" ⓘ
surface form: Hijra of Prophet Muhammad from Mecca to Medina
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 module
surface form: std::time::UNIX_EPOCH
1970-01-01T00:00:00Z via predicate surface "epochStart" ⓘ
Hubble constant H₀
surface form: Hubble constant
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" NERFINISHED ⓘ
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" ⓘ
ICRF
surface form: International Celestial Reference Frame
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" ⓘ
standard reference for European astronomers before Copernicus
surface form: Alfonsine Tables
era of Alfonso X ⓘ