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

The NYISO is reserving hours beginning 05:00 and 08:00-23:00 in the May 1, 
2001
Real-Time Market as well as the following hours per ECA20001006B to verify
prices:

PJM: 00:00-02:00, 22:00
OH:  00:00, 22:00
HQ:  00:00, 05:00, 07:00, 22:00
NE:  00:00-05:00, 22:00, 23:00

Prices in the May 2, 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