i understand where you're coming from, but the 930 can only be so accurate because they host bigger shows and can rely on bands arriving in time, as well as fans. when i do shows at the warehouse or DC9, most of the bands arrive in beat-up, unreliable vans, and of course have nobody managing/babysitting them. and then when you do have everything under control, people don't even show up until well after doors, so the opening bands don't want to play when nobody's around. i try to begin shows at a reasonable time, but it doesn't always work out that way. sometimes soundcheck takes forever, or some equipment is busted and we have to scramble to replace it or fix it.
the world of independent/underground touring/booking is a lot like spinal tap and is incredibly unpredictable. at larger venues, things are run much more smoothly.