anchor.diff:             #:define-timezone
              #:*default-timezone*
              #:now
  +           #:today
              #:enable-read-macros
              #:+utc-zone+
              #:+month-names+
  
positive.code:                         :usec usec
                          :timezone (realize-timezone
                                     (or timezone *default-timezone*)))))))
  
  (defun now ()
    (local-time :universal (get-universal-time)))
  
negative.code:            #:encode-local-time
             #:decode-local-time
             #:parse-timestring
             #:parse-datestring
             #:format-timestring
             #:format-rfc3339-timestring
             #:parse-rfc3339-timestring
  