So it adjusts for time zone. That means Trump posted it after Q.
Trump posted it 57 minutes before Q, which is what the Anon said (57 minute delta).
Trump posted it at 30 Sep 2018 - 1:56:27 PM Central.
Q posted it at 30 Sep 2018 - 2:53:45 PM Central.
Unfortunately, it's not a Q proof.
If you want to compare times of Q drops and Trump tweets easily, use https://qmap.pub/ and make sure "POTUS: On" is set at the top of the page. That ensures his tweets will show inbetween the Q drops.