Lee and or Tom this site... TFC has some great information for you...

under commodity charts..

you can choose to bring up the pit session or the electronic session..

(none of them use midnight as a new day)

the contract specs will also define the trading hours for you ...

its all right here.. everyday.. do some reading..

ps lee its not 7-10 bars its 7-10 setups which for nat gas needs 2.335 to trigger a buy singal.... i put on a small position down at 2.255.... i cheated the 7 - 10 rules using the weekly chart 2.23x low.. as double bottom potential... also got some nat gas etf... hnu
just trade it dont love it..

so was 2 cent away from a valid buy signal tonight but its slipping down....

stop 2.22

but it is possible still to go lower on (day 10) and turn up last chance..

study 7-10s study study ..

you will print the cash..