What format is the exp (Expiration Time) claim in a JWT

RFC 7519 states that the exp and iat claim values must be NumericDate values. NumericDate is the last definition in Section 2. Terminology, and is defined as the number of seconds (not milliseconds) since Epoch: A JSON numeric value representing the number of seconds from 1970-01-01T00:00:00Z UTC until the specified UTC date/time, ignoring leap seconds. … Read more