Here is an interesting infographic that displays the best and worst time to post on some of the biggest social media: Facebook, LinkedIn, Twitter, Google+ and Pinterest.
Find Out How Many People Use Over 1,000 of Your Favorite Social Networks, Apps and Digital Services
From my experience, all of this is accurate except for Google+. I have consistently seen the best G+ post engagement late in the evening and early in the morning (10pm-1am ET). I do see some activity during the work day, but nowhere near what you see at night.
How about you? Do you agree with the times listed in this graphic? Leave a comment and agree or disagree with the findings.