If you only trade one timezone that's different from yours, use that one. Never your local time as DST creates a huge mess (most of Asia has no DST, Europe has different DST compared to US).
Hadn't realised you were such an expert http://www.elitetrader.com/et/index...system-i-just-downloaded.295899/#post-4208913 http://www.elitetrader.com/et/index...am-why-wouldnt-this-work.295900/#post-4208925 To reiterate the point most slower systematic trading strategies run by large institutional work on a 'ask for price at this point in time' rather than 'wait for price to update' basis. Note if the former is working every 1/N seconds, where N is large enough, then these approaches will effectively give the same results. GAT
I just use my local time for everything. I don't bother saving holiday calendars or opening time. I just check if a market is open. If it isn't, I wait. If it's a holiday then I'll be waiting to the next day. If the opening time has changed due to DST maladjustment, then I'll probably be waiting an hour. DST adjustments involve massive amounts of work; too much for an individual trader IMHO. GAT