When time session open is changed in a year?

[khoaphp]

Hi guys.

I'm writing an EA which automatically find STRONG breakout, especially  it works very good in USA session.

This is my problem:

- When I back test EA in history chart, how do I know exactly time opened at that day? (Because every year time open has diffent).

It's mean HOW DO WE KNOW EXACTLY THE DAY TIME SESSION OPENED IS CHANGED IN YEAR?

For example: EUR/USD in 22 Nov 2017, what time USD session opened exactly?

Thank you guys.

(When EA done, I will share to you)

[Mohamad Zulhairi Baba]

khoaphp:

Hi guys.

I'm writing an EA which automatically find STRONG breakout, especially  it works very good in USA session.

This is my problem:

- When I back test EA in history chart, how do I know exactly time opened at that day? (Because every year time open has diffent).

It's mean HOW DO WE KNOW EXACTLY THE DAY TIME SESSION OPENED IS CHANGED IN YEAR?

For example: EUR/USD in 22 Nov 2017, what time USD session opened exactly?

Thank you guys.

(When EA done, I will share to you)

google Daylight Saving Time (DST)