How long can you leave washed clothes before drying?

There are two answers to this.

The appropriate answer, and the lazy answer.

The correct and civil thing to do is to wait about 30-45 minutes if you have a private home washer and dryer, if you are at a public facility, you would need to switch over as soon as possible.

The lazy answer is you can wait to 3-4 hours before they start to smell, but don't leave them in over a day because they will get mildew. In public, you can keep them in as long as you want, but people will steal them if you don't eventually switch them over .