>Do they deal in LOCAL time?  GMT?  TAI?  Other?

The reason that no "clarification" to STCKCONV/CONVTOD was made was 
because no clarification seemed appropriate (and I continue to believe 
that). These services deal with the TOD clock. In my mind, a TOD clock 
value is not local, gmt, tai or anything else other than itself. The 
important concepts to the TOD clock are that 1 microsecond is represented 
by bit 51 and what a value of 0 represents. 

After you have dealt with the clock value, you can then talk about 
converting it to another format.

You could say that the output from STCKCONV and the input to CONVTOD is a 
date/time according to TOD clock rules. Perhaps I'm too close to it, but 
given that the input (to STCKCONV) or the output (from CONVTOD) is in TOD 
clock format,  I think that such a statement would be somewhat redundant.

Peter Relson
z/OS Core Technology Design

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