calendar-daylight-time-zone-name
calendar-standard-time-zone-name))
(24-hours (truncate time))
+ (minutes (round (* 60 (- time 24-hours))))
+ (24-hours (if (= minutes 60) (1+ 24-hours) 24-hours))
+ (minutes (if (= minutes 60) 0 minutes))
+ (minutes (format "%02d" minutes))
(12-hours (format "%d" (if (> 24-hours 12)
(- 24-hours 12)
(if (= 24-hours 0) 12 24-hours))))
(am-pm (if (>= 24-hours 12) "pm" "am"))
- (minutes (format "%02d" (round (* 60 (- time 24-hours)))))
(24-hours (format "%02d" 24-hours)))
(mapconcat 'eval calendar-time-display-form "")))