Technically, the thread lasts until the next one opens - but it's usually pretty dead by Sunday, often by Saturday. And... FINALLY! This is the last take I'm doing! She now has a 2.5 hours to pretty it up for the thread. You'll like it! It's actually at about the threshold of her ability. In fact, I was a little skeptical that she'd get it figured out in time. She's put many, many hours into it. I'm pleased!