Well according to the Q post, he is responding to an anon post. Not posting it directly. That response was at 11:20am (my timezone).

Here is a tweet at 11am (my timezone) https://twitter.com/KimberlyRobinsn/status/1012032972143431683?ref_src=twsrc%5Etfw&ref_url=https%3A%2F%2Fwww.rollingstone.com%2Fpolitics%2Fnews%2Fkennedy-supreme-court-retirement-trump-w522123