Download expired futures historical data

[forjoke]

Hello,

The data of ES 03-11 I download from IB today(4.21) is different from what I saved real time. For example, I tried to download data in 20110307 both ES 03-11 and ES 06-11 , the data downloaded are same.

Thanks for your help.

[NinjaTrader_Bertrand]

forjoke, thanks for the post - that could unfortunately be the case, the data recorded realtime compared what's stored on the servers might not match 100% -

http://www.ninjatrader.com/support/helpGuides/nt7/how_bars_are_built.htm

[forjoke]

I guess It is caused by daylight saving time. Looks like one hour difference between downloaded data and real time saved data.