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Simple H1 GBPUSD EA

  • #5,781
  • Edited 3:08pm Jun 28, 2010 2:58pm | Edited 3:08pm
Since SkyzerFX brought up the summer GMT offset switch, now may be a good time to ask this question... (I have never dealt with EAs that are GMT sensitive, so I'm not sure the answer to this and how it may affect Geoff's EA, but I think it does)

As an example, I use MBTrading. MBTrading right now is GMT -4 because we are now in day light savings.
When day light savings goes away Nov 7 in the fall MBTrading switches to GMT -5

Daylight Saving Time dates for 2010:
Sunday 14 March 2010 2am local time
until Sunday 7 November 2010 2am local time
Eastern Standard Time (EST) = GMT-5
Eastern Daylight Time (EDT) = GMT-4

This brings up the question for backtesting: How do EAs interpret GMT offset during backtesting? I'm guessing if you set the GMT offset to a specific # and then when the time changes from standard time to daylight time or daylight to standard, then it will be off by one crucial hour. I think the EA may need logic so that backtests take into account this time shift, which may need hardcoded days and times of when the switch happens in 2010, 2009, etc since depending on the year, it is at different times. Any thoughts?

Geoff-> This change I'm sure will give you even more accurate and better backtest results! Who knows, maybe even give better results for previous years that some people have been wondering about.

http://wwp.greenwichmeantime.com/

Thanks,
jd
  • #5,782
  • Jun 28, 2010 3:09pm Jun 28, 2010 3:09pm
Quoting piptician
Yes I meant use V13 in back test just for those loosing dates just so we can see the Fractal/SMA annotations for those dates. We can compare those to what we get on say Alpari UK to see what the difference is.

I think setting OrderModifyMillisecondDelay to 0 should fix you TSL issue.

Regards,
Piptician
You got it, here is that loosing stake Report for V13 on IBFX..

Notice how all those loses are just before Summer time switch..

Report attached..
Attached File(s)
File Type: zip 3-month-loosing-stake-IBFX.zip   22 KB | 276 downloads
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  • #5,783
  • Jun 28, 2010 3:13pm Jun 28, 2010 3:13pm
Quoting jdtrader

This brings up the question for backtesting: How do EAs interpret GMT offset during backtesting? I'm guessing if you set the GMT offset to a specific # and then when the time changes from standard time to daylight time or daylight to standard, then it will be off by one crucial hour. I think the EA may need logic so that backtests take into account this time shift, which may need hardcoded days and times of when the switch happens in 2010, 2009, etc since depending on the year, it is at different times. Any thoughts?

jd
Bravo! You got it, but this seems to be only problem for those

Brokers which are running data on direct GMT time like IBFX.. Those who are in + or

- compare to GMT, should be fine, cause they probably adjust their offset accordingly.
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  • #5,784
  • Jun 28, 2010 3:19pm Jun 28, 2010 3:19pm
There is a simple way to eliminate all this time problems. Just let the EA calculate the correct time offset to GMT!

Piptician you can PM me and I will share a piece of code that can be used for that.
  • #5,785
  • Jun 28, 2010 3:21pm Jun 28, 2010 3:21pm
OK!!!!! I found what I need for proof.. Here is that message from IBFX

during Time switch:

======================================

REMINDER:

We are approaching Daylight Saving Time. This coming Sunday, March 14th, clocks will be pushed forward one hour so as to allow for longer days in the spring and summer months. Almost all of the United States and many countries around the globe observe this change every year.
However, Greenwich Mean Time (GMT) does not change for Daylight Saving Time. Interbank FX will still close its weekly trading session at 4:00 PM (16:00) Eastern Time on Fridays and open its weekly trading session at 6:00 PM (18:00) Eastern Time on Sundays. Because Eastern Standard Time will be observing the change in time and GMT will not, the gap in calculating the time difference will go from a 5 hour gap to a 4 hour gap. In other words, during the spring and summer months Greenwich Mean Time is 4 hours ahead of Eastern Standard Time as opposed to 5 hours ahead during the winter.

Beginning Sunday, March 14th, Interbank FX’s trading will begin at GMT 22:00 (6:00 PM Eastern Time). Beginning the following Friday, March 19th, Interbank FX will end its trading session at GMT 20:00 (4:00 PM Eastern Time). *Note that 6:00 PM and 4:00 PM market open and close times are the same for US clients, only the correlation between ET and GMT is changing.

SWAP, daily statements, and end of day reports are processed at 20:59 GMT during Daylight Saving Time.

IBFX
===================

Got it?
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  • #5,786
  • Jun 28, 2010 3:25pm Jun 28, 2010 3:25pm
Quoting SkyzerFX
OK!!!!! I found what I need for proof.....
Great work Sky

Sounds like Tokyo13+ needs some options to specify when DST adjustments need to be made and by how much. As you say, for some brokers no adjustments are needed.

Regards,
Piptician
  • #5,787
  • Jun 28, 2010 3:34pm Jun 28, 2010 3:34pm
Hi piptician!
I attached the ea on M5 with the default setting but i do not have any figure, is it normal or am I missing something?
Thank you so much!
  • #5,788
  • Jun 28, 2010 3:40pm Jun 28, 2010 3:40pm
Quoting piptician
Great work Sky
As you say, for some brokers no adjustments are needed.
Thanks, maybe after all adjustment needed for everyone as, for

example, Brokers

which are running on EST now GMT offset is -4 and when winter time rolls

over, offset would be -5
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  • #5,789
  • Jun 28, 2010 3:50pm Jun 28, 2010 3:50pm
Quoting jdtrader
Since SkyzerFX brought up the summer GMT offset switch, now may be a good time to ask this question... (I have never dealt with EAs that are GMT sensitive, so I'm not sure the answer to this and how it may affect Geoff's EA, but I think it does)

As an example, I use MBTrading....
How about running the back test in 2 segments taking into account the time change.
  • #5,790
  • Jun 28, 2010 3:53pm Jun 28, 2010 3:53pm
Quoting jiva34
How about running the back test in 2 segments taking into account the time change.
As far as I can see, IBFX is affected by this and my other ECN broker

running on EST, doesn't have those issues.. I mean if, you run backtest

and see only few loses, means everything is ok, but IBFX backtest

is definitely screwed up by time change..
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  • #5,791
  • Jun 28, 2010 4:17pm Jun 28, 2010 4:17pm
How are him the longtime results tests with this ea?
Unfortunately, my 5 years tests was negative with this ea.
How can I insert here a picture?
thank you steve
  • #5,792
  • Jun 28, 2010 4:21pm Jun 28, 2010 4:21pm
Quoting SkyzerFX
As far as I can see, IBFX is affected by this and my other ECN broker

running on EST, doesn't have those issues.. I mean if, you run backtest

and see only few loses, means everything is ok, but IBFX backtest

is definitely screwed up by time change..
yes. Brokers agree. Let us see how to make this as complicated for traders as we possibly can.
  • #5,793
  • Jun 28, 2010 4:50pm Jun 28, 2010 4:50pm
So Sky. I run on IBFX. What do I use to trade now??? GMT 0 ????????
  • #5,794
  • Jun 28, 2010 5:26pm Jun 28, 2010 5:26pm
Quoting gerry berard
So Sky. I run on IBFX. What do I use to trade now??? GMT 0 ????????
The answer is YES!
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  • #5,795
  • Jun 28, 2010 5:38pm Jun 28, 2010 5:38pm
Can someone please put up a screen shot of what the new Toyko V13 looks like on the chart? It appears to me like we may be setting up for long trades, but I can't download the version on my office computer, I can't watch the 5M details.
  • #5,796
  • Jun 28, 2010 5:44pm Jun 28, 2010 5:44pm
good evening!
i have an ideea...
it would be nice to can customize the lotsize manualy for each order (preset 3)

for example: 1lot, 0.2lot, 0.1lot ...

comments?
done the math ...

thanks!
... feel better day by day.
  • #5,797
  • Jun 28, 2010 5:50pm Jun 28, 2010 5:50pm
Ohh man, FX market really Dead today and spreads are wide..

What is this? Some kind of Holiday?
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  • #5,798
  • Jun 28, 2010 5:53pm Jun 28, 2010 5:53pm
Thanks. Sky.
  • #5,799
  • Jun 28, 2010 5:59pm Jun 28, 2010 5:59pm
Quoting gerry berard
Thanks. Sky.
Anytime.
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  • #5,800
  • Jun 28, 2010 6:11pm Jun 28, 2010 6:11pm
Long trades triggered on camV3. FXDD
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