> > In my time zone, the leap second occurred at 17:59:60.  So, I wonder
> > about the z/OS STIMER macro:
> >
> > If, at 17:59:59 I had issued STIMER WAIT,LT=[18:000:01]
> >     would the wait have expired in 3 seconds?
>
> Yes, if you scheduled the leap second via STP or ETR.
> It would expire in 2 seconds if you aren't using leap seconds
>
> > If, at 17:59:59 I had issued STIMER WAIT,BINTVL=[3 seconds]
> >     would the wait have expired at 18:00:01?
>
> No, it would expire at 18:00:02 regardless of whether you are using
> leap seconds
>
> >
> > Unless the answer to both questions is "Yes," there's a bug.

I need to correct my answer to the second question:
If, at 17:59:59 I had issued STIMER WAIT,BINTVL=[3 seconds]
    would the wait have expired at 18:00:01?

It would expire at 18:00:01 if you are using leap seconds and at
18:00:02 if you are not. In both cases the wait will expire in 3
seconds time.

George Kozakos
z/OS Software Service, Level 2 Supervisor

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