For me, the daily time frame is the best time frame to trade Forex because trading the daily time frame allows you to zoom out and see the big picture. Every single forex indicator I tested out, was tested on every time frame (except for the 1 minute, because trading there is ridiculous). I was constantly blown away by how much more accurate everything was on the daily. It almost never failed. The only times where it did fail was where an indicator was really bad to begin with, it may have worked a tiny bit better on a lower time frame, but was worthless overall, so it didn’t matter.