If you notice that once your posts have been published, that the time is consistently off then you likely need to change the timezone for the application. To do this log into StatusCast with your administrative user and navigate to the Settings section. Here you can modify the Active time zone to reflect your time and location.
Once you have it selected remember to click Save at the bottom of the page to save your changes. Your posts will now reflect the time zone selected, and any past post will be updated to reflect this as well.