Originally Posted by unlimitedpostings

Are you asking about timing for the best results, or timing for your ads to show up?

If you're asking about timing for getting the best results, that is something you're going to just have to test for your product and target market. If you're talking about timing for getting the ads to show up, there is no such thing. If you do everything right, your ads will show up 24/7/365. With billions of hits monthly, craigslist isn't worried about looking what time it is where you post and wonder why you're posting at 3 a.m.