sig
type t = Time.Date.t * Time.Ofday.t
val of_time : Time.t -> TZ.Zone.t -> TZ.Date_time.t
val to_time : TZ.Date_time.t -> TZ.Zone.t -> Time.t
val convert :
from_tz:TZ.Zone.t -> to_tz:TZ.Zone.t -> TZ.Date_time.t -> TZ.Date_time.t
end