CGoering@nyiso.com writes to the NYISO_TECH_EXCHANGE Discussion List:

The NYISO is reserving hours beginning 00:00 - 09:00, 11:00 - 14:00, 16:00, 
and
20:00 - 22:00 in the May 6, 2001 Real-Time Market as well as the following 
hours
per ECA20001006B to verify prices:

PJM:  0:00 - 7:00, 13:00 - 23:00
OH:  7:00, 23:00
HQ:  6:00, 7:00, 23:00
NE:  0:00, 7:00, 23:00

Prices in the May 7, 2001 Day-Ahead Market are correct.

This e-mail information is a copy of the official posting which can be found 
at
the following address on our website:
http://mis.nyiso.com/public/htm/OperMessages/CurrentOperMessages.htm#mm