Stock exchange BSE and NSE will conduct a special trading session on Saturday, January, to test a disaster recovery site. Trading will be conducted in the cash as well as derivative segments on that day, according to separate circulars issued by the bourses on Thursday. 

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The special trading session will begin normally, at 9:15 am, and conclude at 12:30 pm, in line with SEBI guidelines, NSE said. 

NSE detailed the schedule of the special trading session in the capital market segment as follows: 

LIVE trading from the primary site

Trading Session 1 Time
Morning Block Deal Window Session-1 open time  08:45 hrs
Morning Block Deal Window Session-1 close time  09:00 hrs
Pre-Open open time  09:00 hrs
Pre-Open close time*  09:08* hrs
Normal Market open time  09:15 hrs
Call Auction Illiquid session 1 open time  09:30 hrs
Call Auction Illiquid session 1 close time*  09:45 hrs
Normal Market close time  10:00 hrs
*Random closure in the last one minute

Live trading from the disaster recovery site

Trading Session 2 Time
Pre-Open open time  11:15 hrs
Pre-Open close time *  11:23 hrs
Normal Market open time  11:30 hrs
Call Auction Illiquid session 2 open time  11:45 hrs
Call Auction Illiquid session 2 close time*  12:00 hrs
Normal Market close time  12:30 hrs
Closing Session open time  12:40 hrs
Closing Session close time  12:50 hrs
Trade Modification end time  13:00 hrs
*Random closure in the last one minute

Here are the details of trading in the derivative (futures and options) segments that day, as per the NSE circular:

LIVE trading from the primary site

Trading Session 1 Time
Normal Market open time  09:15 hrs
Normal Market close time  10:00 hrs

 LIVE trading from the disaster recovery site

Trading Session 2 Time
Normal Market open time  11:30 hrs
Normal Market close time  12:30 hrs
Trade modification end time  12:40 hrs

The bourses engaged in specific discussions with SEBI and its technical advisory panel in order to assess market infrastructure institutions' preparedness to handle any unforeseen event impacting their operations and to restore operations from the DR site within the stipulated recovery time. 

Earlier, the capital market regulator had issued guidelines for exchanges and depositories to devise a business continuity plan and maintain a disaster disaster recovery site (DRS) aimed at protecting data and transaction integrity.

BSE and NSE will shift their operations from the primary site to the disaster recovery site with "a graceful shutdown at the primary site", the bourses said in separate communications to members.

"The closing price for the day shall be arrived at as per the existing rules for a normal trading day... All the outstanding orders shall be purged before the start of trading from DR site," they added. 

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