First of all, who cares about “Likes” on a post? FB engagement is the low hanging fruit in the social world. It also doesn’t mean ANYTHING unless you have a specific goal in mind for the stories it generates about your page. You can add virality and reach to the shortlist of metrics that don’t translate to social media success, too. They are simply short-term “health” metrics.
Secondly, this infographic is a gross overgeneralization of engagement monitoring. The quote at the bottom of the image “Just because activity peaks at certain times, doesn’t mean those are the best times to post.” pretty much says, “Our infographic a load of crap” None of what is on this image is true for the majority of brand pages. The notion that images do better on FB the only glimmering light of truth, but that statistic varies based on industry, page size, and fan quality.
You want to know the best times and days to post? Download the last 180 days of your brand page posts and run the analysis yourself. Or if you need help, ask me. I’ll do it for you in 30 minutes and you won’t need to worry about even looking at the infographic below.