Everyone wants to know what time they should post in order to maximise their rewards from posts that they have spent time on. There's no better feeling than having a post receive the profits you feel that they deserve. The first thing to take into consideration is the main user base of steemit. Now this I could mean one of 2 things: demographics or region. From what I have noticed, demographics are not all that important for steemit and it is used by a diverse range of people which is absolutely fantastic, exposing people to cultures not familiar to their own. So since you won't have to rely on demographics too much, thinking about region should be your priority, particularly to do with time zones. It can easily be assumed that steemit has a majority of users being from North America, as many platforms of this kind are, so you might want to adjust your posts to this accordingly. Knowing this, you can easily adjust to posting your content in the evenings, relative to a North American time zone.
This graph, courtesy of @scrawl, shows that average payout of all posts in SBD based on the hour that they were posted on the blockchain. This graph is actually based on GMT (Greenwich Mean Time, UK) as opposed to a North American time zone but you just need to roll these times back 5/6 hours depending on where you are. So from this graph you can see it would probably not be the best to post between 6am and 3pm GMT.
Hopefully you found this post somewhat useful. If you did, upvotes and resteems would be very helpful to me and a follow is always appreciated. Also do feel free to leave a comment.