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

The NYISO is reserving hours beginning 00:00 - 01:00, 05:00, 11:00, 13:00, 
15:00
- 16:00 and 23:00 in the May 10, 2001 Real-Time Market as well as the 
following
hours per ECA20001006B to verify prices:

PJM:  00:00 - 05:00, 23:00
OH:   03:00
HQ:   03:00
NE:   03:00, 22:00

Prices in the May 11, 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