Inherited from Serializable
Inherited by implicit conversion any2stringadd from
Date to any2stringadd[Date]
Inherited by implicit conversion StringFormat from
Date to StringFormat[Date]
Inherited by implicit conversion Ensuring from
Date to Ensuring[Date]
Inherited by implicit conversion ArrowAssoc from
Date to ArrowAssoc[Date]
RFC 7231 section 7.1.1.2
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Date