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

The NYISO is reserving hours beginning 1:00 - 2:00 and 5:00 - 6:00 in the
September 3, 2001 Real-Time Market as well as the following hours per ECA
20010608B to verify prices:

HQ:  00:00 - 07:00
NE:  None
OH:  None
PJM: 00:00 - 05:00

Prices in the September 4, 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 of our website:
http://mis.nyiso.com/public/htm/OperMessages/CurrentOperMessages.htm#mm