On Thu, Aug 15, 2019 at 07:56:04PM +0000, Thiede, Christoph wrote:
> Hi, there.
> 
> 
> Is there any reason why we don't have Time>>#-?
> 

Yes. Conceptually, it does not make sense because class Time does not
represent a magnitude. If you want to think of the time of day as a
magnitude, then class DateAndTime is probably what you want.

The class comment for Time explains:

  If you need a point in time on a particular day, use DateAndTime.
  If you need a duration of time, use Duration.

Dave