expires

gs:expires Property

When the alert ceases to apply. An alert with no expiry stays on screens indefinitely and trains people to ignore alerts.

Identifier (IRI)
https://schema.govfresh.com/v1/expires
Used on
gs:AlertInfo
Value
schema:DateTime
Profile
alerts

The full definition is in the vocabulary file (Turtle). A static host cannot choose a format by request, so this page and that file are the two ways to read it.