Post date is wrong (using draft save date)

I just posted this http://therewardboss.com/2015/09/11/dollar-beard-club-vip-launch-party/

I started the draft on 9/11/15
Published on 9/12/15

The final date on the published version is 9/11/15 for some reason (it should be 9/12/15)
This is a problem because the network I’m part of puts posts in order of the publish date so if I have a old date, my post will get buried under all the new ones.

This has been happening recently and has never been a problem in the past. Any idea how to fix this? I have not installed anything new recently except maybe updating the plugins I have already.