@Otzlowe said:That's the fault of the organizers. People cling to what they know even if it's not the most efficient. GMT is too ambiguous and allows for errors when daylight savings is in effect. UTC is more precise and stable.
@MrKlorox: Except that I almost never see anyone bother using UTC. It's usually GMT and PST.
Considering that UTC doesn't seem to be all that wide-spread yet, I'm thinking that it's also a conscious choice due to lack of public familiarity.