From Linux Man Pages
822-date - Print date and time in RFC822 format
822-date
DESCRIPTION
822-date displays the current date and time in the format described in RFC822, using a numeric timezone offset as
recommended in RFC1123.
OPTIONS
822-date does not take any arguments or options.
BUGS
This facility really ought to be part of date(1),
RELATED
Standard for the Format of ARPA Internet Text Messages (RFC822),
Requirements for Internet Hosts -- Application and Support (RFC1123) section 5.2.14,
date(1).
CATEGORY