absolute time specification in SMIL

Hi:
Is there anything in SMIL that allows the playing based on absolute 
times of the year.  For example:
a) start presentation1 on Dec 29, 1999 at 12:32 am (local time)
b) start presentation2 on Dec 31, 1999 at 12:50 pm (again local time)
 
I might have missed it while reading the smil specification.  If so, can 
you direct me toward the tag for specifiying local absolute times.
 
Thanks
Raghu Marwaha
rmarwaha@riptidetech.com
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Received on Saturday, 27 March 1999 20:26:31 UTC