Want to adjust the posting timing? You can change it inside the schedule session. Depending on your subscribed package, you can create 4 or more posting timer.
These timelines are specific to a social network, if you want a synchronised timeline across all networks, you need change them individually.
Select one of the social network. Then select "Schedule".
Here, you can change your schedule timezone and timeline.
In case if you wish to change the timeline from am/pm to 24 hours, you can got to My Account > Settings to do so.
Finally, select the "Add Post Time" to update the new timeline.
That's all for updating timeline and timezone.
However, please note that each social network has its own timeline and timezone. If you want all networks to post synchronously, you'll need to update each of them one by one accordingly.