Different brokers - different GMT

What GMT is widely used? Obviously, different brokers are on different GMT, so candle closes on daily and H4 chart are different, that can give false signals, like one candle could be hammer at one broker, and there is no hammer at the other broker's chart, pretty tricky, and s/r levels based on candle close are different. So is there some GMT that bigger players or most traders prefer?
Maybe London GMT +1, or New York GMT -5?

The price reacts to demand/support and supply/resistance regardless of the time frame and when the candles open and close. If there's a rejection of a price level it may appear as a long wick, or it may appear as an engulfing candle or it may appear as what I call the Two Towers (from Tolkien, not NYC) - a tall candle in one direction followed by an equal candle in the opposite direction (I'm sure it has a more official name) or something else similar. Regardless, a rejection of a price level is a rejection of a price level.

Demand/support and supply/resistance are the same on every chart because it's based on price level, not candle OHLC - OHLC appears the way it does because it reacts to the price level.

As for how to trade this, just stick with one thing and learn it. Trade what your broker gives you and learn what price looks like at these levels.

edit: You'll never find the 'perfect' time zone because price reaches these levels at different times in different markets.

Rob

The thing is i'm using fxpro demo (GMT +2) for charting and i have live account with oanda, i do not look oanda's charts at all i just execute, and now oanda will offer metatrader so i could use their charts for analysis, but these different candles on h4 and daily are totally disorientated me, today i didn't take any trade because of that
Sometimes i don't wait for a rejection i just put pending order on a certain level (i also use H4 candle closes to find S/R), i establish the level before price gets there and now i'm little bit confused.
I think i'm gonna compare them for some time and try to see on which h4 and daily candle close level price better reacts.

GMT is one. And it's time at Observatory in Greenwich.
I guess you mean timezones? That's different story.

This tells something about this type of TA, doesn't it?
Think about it.