Planning ahead, are we?
Unfortunately, we have to wait for production to let us know when they are taping. This is often because shows go on "hiatus" which is Hollywood speak for "vacation." We can't post shows and distribute tickets if we don't know when tapings are happening! This also means that you can't submit a request for a specific date until it has been posted.
We typically receive the schedule from production 3-4 weeks in advance. Once we have it confirmed that a taping is happening, it goes up on our site. This is obviously not an exact estimate, since each show's scheduling is different. If you're dying to see a particular show on a particular date, then we recommend checking the 1iota site frequently to see when it gets posted. Following our Facebook and Twitter accounts can help, as we occasionally announce when shows are going up. We never recommend making travel plans based solely on free tickets.
If the calendar skips dates, then there is not currently a taping scheduled for those dates.