procedure: military-time->hm a ->
procedure: s->hectoseconds-string a ->
procedure: s->hms-string a [drop] ->
procedure: seconds-from-hms a ->
converts a string time representation of hours:minutes:seconds,
where minutes and seconds are optional, to seconds
variable: sph-time-string-description
procedure: utc->ymd-hectoseconds a ->
procedure: utc->ymd-hms a ->
procedure: utc->ymd-s a ->
procedure: utc-current-ymd ->
procedure: utc-current-ymd-hectoseconds ->
procedure: utc-current-ymd-s ->
procedure: utc-elapsed-day-string a [scale decimal-min] ->
procedure: utc-from-ymd a ->
variable: ymd-daytime-delimiter