Daylight Saving Problems!

Beginner Questions
1

I have problems and confused about this.
My server platform following GMT + 2 which the London market session open at 9:00 2 weeks ago.

But now my server platform change to GMT + 3 , so is it the London market session will be open at 10:00 in the platform?

And when will these changes occur every year? Can anyone tell me from which month to which month the changes occur?

2

Check these articles. Hopefully you can get some idea.

Ed’s Price Action EA - Forex Trading Hours and Forex Currency Pairs

Daily Forex Trading Hours | AuthenticFX

Didn’t you get any news from the broker? Normally they inform traders about these kind of changes.

3

So for GMT +3 , the open market session of London will be 10:00 right

4

yes.

thats right.