Megatest

common:hms-string->seconds
seconds->hr-min-sec
seconds->time-string
seconds->work-week/day-time
seconds->work-week/day
seconds->year-work-week/day
seconds->year-work-week/day-time
seconds->year-work-week/day-time-fname
seconds->year-week/day-time
seconds->quarter
common:date-time->seconds
common:find-start-mark-and-mark-delta
common:expand-cron-slash
common:cron-expand
common:cron-event

(define (seconds->work-week/day sec)
  (time->string
   (seconds->local-time sec) "ww%V.%u"))

(define (seconds->year-work-week/day sec)
  (time->string
   (seconds->local-time sec) "%yww%V.%w"))

(define (seconds->year-work-week/day-time-fname sec)
  (time->string
   (seconds->local-time sec) "%yww%V.%w.%H%M%S"))

(define (seconds->year-work-week/day-time sec)
  (time->string
   (seconds->local-time sec) "%Yww%V.%w %H:%M"))

(define (seconds->year-week/day-time sec)
  (time->string