Source: Schema.org v30.1 vocabulary. Official observationDate property definition.
What does observationDate mean?
The observationDate of an [[Observation]].
Used on types (domainIncludes)
Expected value types (rangeIncludes)
Schema.org domainIncludes and rangeIncludes are descriptive guidance, not strict validation prohibitions. Check the official reference for updates.
Related reference
Browse all Schema.org types and properties · Google feature support status