6.13.2.11 EventTime

6.13.2.11.1 Purpose

When an event occurred, with the same precision model as ObservationTime, but without intervals.

6.13.2.11.2 Relationships

Used by

• Animal.birth_date
• AnimalProfileEvidence.birth_date
• AnimalProfileEvidence.recorded_at
• CanonicalObservation.recorded_at
• CanonicalEvent.occurred
• TreatmentEvent.ends_at
• ResolvedEvent.occurred
• FeedCoverage.data_from
• FeedCoverage.complete_until
• FeedCoverage.settled_until
• ObservedPeriod.start
• ObservedPeriod.end

6.13.2.11.3 Rules & constraints

• Same fields as ObservationTime, with no interval variant in this initial contract.
• Represents an instant, date, month or unknown occurrence, not an event duration.
• Event start/end fields use this same precision model; approximate-window events require a future explicit extension.