Studies have shown that the top three times of the day with the most users logged in tend to be on weekdays at 11:00 a.m., 3:00 p.m. and 8:00 p.m. EST. Apparently, the biggest spike occurs at 3:00 p.m. EST on weekdays. Also, the first fifteen minutes of each hour see the highest numbers which is likely due to people taking their breaks at work at the beginning of an hour versus the latter part of the hour. And one last fun fact – fans are less active on Sunday versus any other day of the week. I tested this out with my friend list and sure enough, I had the most friends online during those periods. Interesting stuff, huh?
Posting at other times of the day is fine too. If you’ve built up your fan base/friends list big enough, you will always have people online to view your messages. However, wouldn’t you rather post during a time where double or triple the amount of people will be more likely to see it?? Timing is everything! Some food for thought:)