- (let* ((date (current-time-string))
- (dv (timezone-parse-date date))
- (tdate (timezone-make-arpa-date
- (string-to-number (aref dv 0))
- (string-to-number (aref dv 1))
- (string-to-number (aref dv 2)) time
- (or (aref dv 4) "UT")))
- (nseconds (gnus-time-minus
- (gnus-encode-date tdate) (gnus-encode-date date))))
- (round
- (/ (+ (if (< (car nseconds) 0)
- 86400 0)
- (* 65536 (car nseconds))
- (nth 1 nseconds))
- gnus-demon-timestep)))))
+ (let* ((now (current-time))
+ ;; obtain NOW as discrete components -- make a vector for speed
+ (nowParts (decode-time now))
+ ;; obtain THEN as discrete components
+ (thenParts (parse-time-string time))
+ (thenHour (elt thenParts 0))
+ (thenMin (elt thenParts 1))
+ ;; convert time as elements into number of seconds since EPOCH.
+ (then (encode-time 0
+ thenMin
+ thenHour
+ ;; If THEN is earlier than NOW, make it
+ ;; same time tomorrow. Doc for encode-time
+ ;; says that this is OK.
+ (+ (elt nowParts 3)
+ (if (or (< thenHour (elt nowParts 2))
+ (and (= thenHour (elt nowParts 2))
+ (<= thenMin (elt nowParts 1))))
+ 1 0))
+ (elt nowParts 4)
+ (elt nowParts 5)
+ (elt nowParts 6)
+ (elt nowParts 7)
+ (elt nowParts 8)))
+ ;; calculate number of seconds between NOW and THEN
+ (diff (+ (* 65536 (- (car then) (car now)))
+ (- (cadr then) (cadr now)))))
+ ;; return number of timesteps in the number of seconds
+ (round (/ diff gnus-demon-timestep)))))