Reference Position
- CURIE:
gmeow:ReferencePosition - IRI: https://blackcatinformatics.ca/gmeow/ReferencePosition
- Category: class
- Defined by:
gmeow:slices/temporal - Box roles: TBox role (What is this?)
The spatial locus, observatory, timezone, or planetary body relative to which a time is expressed — e.g. an observatory longitude for local sidereal time, an IANA timezone for civil time, or a planet for planetary calendars.
Structure
Subclass of: gmeow:Entity, gufo:Object
Practical Pattern
Use gmeow:ReferencePosition as a specialized kind of gmeow:Entity, gufo:Object. Add statement metadata or a standpoint when the assertion needs provenance, confidence, or vantage.
Common Companion Terms
External Equivalences
Equivalent or closely aligned targets: time
Linkages
Generated from the canonical mapping DSL. SSSOM files are the generated public interchange form for term equivalences.
Term Equivalences
| Source | Kind | Profile | Predicate/Relation | Target | Evidence |
|---|---|---|---|---|---|
gmeow:ReferencePosition |
equivalence | - |
skos:relatedMatch | time:TimeZone | gmeow-temporal.sssom.tsv; gmeow:eqTemporal006; confidence 0.6 |
Usage Advice
Use when
- Use when a frame's time depends on a place — an IANA timezone for civil offset, an observatory longitude for sidereal time, a planetary body for an off-Earth calendar.
Avoid when
- Avoid for scales that need no locus (TAI, TT, UTC-at-zero-offset) and avoid encoding the offset numerically in the timestamp instead of naming the position; mint individuals, not subclasses.
How to use
- Reference a position individual from a frame via
gmeow:frameReferencePosition; leave it absent for position-independent frames, since the property is optional by design.
Examples
- ex:torontoTZ a
gmeow:ReferencePosition; rdfs:label "America/Toronto"@en.