**I would like to be able to change the timezone for my requests to the IB API, how can I do this?** I am writing in Python, and thus use the IBPy wrapper found [here][1].

Supposedly, the third argument of the function reqHistoricalData(...) controls the timezone. However, changing from EST to JST doesn't change my prices. I have been in contact with the API guys from IB. They obtain the following results for AUD.NZD:

With EST as timezone opening price for 23/6/16 is: 1.046185
With JST as timezone opening price for 23/6/16 is: 1.04598

I get:
1.046185 for all timezone I have tried (GMT, EST, JST).

I have approached the following resources:

 - [General usage and examples][2] of reqHistoricalData
 - [List][3] of accepted timezones 
 - [Documentation][4] of reqHistoricalData() function.

How can I change the timezone in my historic data requests? Any help is greatly appreciated, and I promise to buy you a drink the next time you are in Singapore.

  [1]: https://github.com/blampe/IbPy
  [2]: http://interactivebrokers.github.io/tws-api/historical_data.html#hd_request
  [3]: https://www.interactivebrokers.com/en/software/api/apiguide/tables/supported_time_zones.htm
  [4]: https://www.interactivebrokers.com/en/software/api/apiguide/c/reqhistoricaldata.htm