Analyzing some random accounts on Ad Espresso, we often saw that the review time decreased the longer you’ve been advertising on Facebook.

There’s no way to know exactly how the review process works but we can make some educated guesses.

It’s extremely unlikely, with the huge number of ads that gets published every day, that the entire Facebook Ad review process is fully manual.

Your image is carefully curated, your copy is finely tuned, and your targeting is carefully calibrated. While your ads are “pending review,” anything can happen.

You submit it for review, and you end up receiving a notification that says that your ad has not been approved. Sometimes good ads are rejected or bad ads are approved.

Once your ad is created, it ends up in a review queue where a team of highly trained Facebook employees will review it and then either approve or reject it.

Analyzing Ad Espresso’s data on ad approval time, we see that you can usually expect a faster review if you publish your ads on business days from 8am – 8pm PST (Pacific Standard Time) with mornings tending to work even better.

It’s likely a mix of algorithmic and manual analysis.

Here are some factors that may greatly influence your approval time: Takeaway: Again these are all speculations, but I think they’re pretty likely.

You know Facebook rejects ads that violate its policies. And Facebook reserves the right to reject or approve an ad for any reason.