Any time I've ever gone to court, the judge has been late. Judges are just egotistical a$$holes from my experience.
I'd agree with your assessment if the courts were done well oiled machine. But they're not, they're generally extremely inefficient and a gross waste of time.
And let's not act like the judge was twiddling his thumbs waiting on dude. Typically, they call your case and if you're not there, they charge you with "failure to appear" and move on. If your counsel is there, your lawyer can plea with the judge that you're running late and he may agree to move to other cases until you arrive. The judge is the one wasting time and resources by even sentencing him to those 30 days.