module Date_time:sig..end
typet =Time.Date.t * Time.Ofday.t
val of_time : Time.t -> TZ.Zone.t -> tdatetime_of_time zone time returns a datetime representation of time in the
given zone.val to_time : t -> TZ.Zone.t -> Time.ttime_of_datetime zone datetime returns a time representing the datetime in
the given zone.val convert : from_tz:TZ.Zone.t -> to_tz:TZ.Zone.t -> t -> tconvert ~from_tz ~to_tz datetime convert datetime in from_tz to to_tz