> However, we could write the requirement such that the IPP/1.1 Printer
> implementation had to attempt to get the time by some means, such as
> the time from a networked NTP Time server, from an incoming HTTP request
> (where it is always present),
I don't think you can count on that. From draft-ietf-http-v11-spec-rev-06,
section 14.18 Date: "If the server does not have a clock that can provide a
reasonable approximation of the current time, its responses MUST NOT
include a Date header field.