Source: Schema.org v30.1 vocabulary. Official foundingDate property definition.
What does foundingDate mean?
The date that this organization was founded.
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