Jakub Narebski [off-list ref] writes:
It looks like it is _almost_ correct. It should be
Date: Fri, 07 Jul 2006 20:57:55 +0200
instead of
Date: Fri, 7 Jul 2006 20:57:55 +0200
It is "day = ([FWS] 1*2DIGIT) / obs-day" in RFC2822.
I think you are reading ABNF wrong. <a>*<b>element means at least
<a> times and at most <b> times occurrences of element. Exact
number of repetition is written as <n>element (which is a
short-and for <n>*<n>element).
See the definition of "hour" and friends a few lines below what
you quoted. It is defined as "2DIGIT / obs-hour" and that is
why we say "01:23:45" not "1:23:45"