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

The NYISO is reserving hours beginning 0:00 and 5:00 in the September 18,
2001 Real-Time Market as well as the following hours per ECA 20010608B to
verify prices:

HQ:  0:00, 2:00, 4:00 - 5:00, 7:00, 23:00
NE:  0:00, 7:00, 23:00
OH:  0:00, 7:00, 23:00
PJM:  0:00 - 7:00, 21:00-23:00

Prices in the September 19, 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