def tz.rule.start
import bend-kit-time@0.3.0.0/time.bend as Timeimport Base
995def tz.rule.start(a: TzDatePart, +standard: Ttype, +daylight: Ttype) -> Maybe<&2, TzRule>:
996 match a:
997 case TzDatePart{start, rest}:
998 do Maybe<&2, TzRule>:
999 b : TzDatePart <- tz.date(tz.after(',', rest))
1000 tz.rule.finish(b, standard, daylight, start)