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

The NYISO is reserving hours beginning 01:00, 13:00 - 16:00, 20:00, and 23:00 
in
the May 7, 2001 Real-Time Market as well as the following hours per 
ECA20001006B
to verify prices:

PJM:  0:00 - 5:00, 22:00
OH:   05:00, 22:00
HQ:   04:00, 05:00, 22:00
NE:   0:00, 05:00, 22:00

Prices in the May 8, 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