GMT on MT4 H1 History Data

[BlackBart]

Hi,

I want know if I download the H1 data from MT4 of any instruments the timezone is the same all the year or not? If not when, for example, I want calculating the mean of the range High-Low of 9:00 H1 bars for all the year then the bar at 9:00 of any day in November it wont be the same bar at 9:00 of any day in June, because if GMT becomes from +2 to +3 in October the right bar to be calculated is the 10:00 H1 in June?

Thanks

Bye

[William Roeder]

BlackBart: I want know if I download the H1 data from MT4 of any instruments the timezone is the same all the year or not?

It will never be the same.

1. • FX opens 5pm ET Sunday and ends 5pm ET Friday. Some brokers start after (6pm is common/end before (up to 15 minutes) due to low volatility.
               Checking for Market Closed - Expert Advisors and MQL5 programming forum Trading - MQL5 programming forum Swap is computed 5pm ET. No swap if no open orders at that time.

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   • Brokers use a variety of timezones. Their local time (with or without DST,) GMT/UTC, GMT+2, NY+7.

     Only with NY+7 does the broker's 00:00 equals 5pm ET and the start of a daily bar is the start of a new FX day.

     GMT brokers, means there is a 1 or 2 hour D1/H4 bar on Sunday (depending on NY DST,) and a short Friday bar.

     GMT+2 is close but doesn't adjust for NY DST.

     EET is closer except when their DST doesn't match NYs. Last Sunday of March and 1:00 on the last Sunday of October vs second Sunday in March and return at 2:00 a.m. EDT to 1:00 a.m. EST on the first Sunday in November.

   • Non-NY+7, means the chart daily bar overlaps the start, and converting broker time to NY time requires broker to GMT to NY timezone conversions.

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   • If you search the web you will find differing answers. Those are all wrong (half the year) because they do not take DST into account (or that it changed in 2007 [important when testing history.])