How long does it take for chocolate to melt in room temperature?

I estimate about 1-2 Hours. I am not an expert but I would guess that for a chocolate to melt in a room temperature it would probably take that time.

Well, both latitude and intensity of light affect temperature because, the higher the light intensity, the higher the temperature and since latitude is the measure of how close you are to the equator, then the closer to the equator you are, the higher the temperature is.