Good catch. Do you know what it means?
Q posted on July 25 that McCain was returning to the news. That post includes a picture of McCain with his hands up, and the time stamp’s minutes are at :28.
Today, Q posts that it is suicide weekend, and refers to Hands Up, 30 days and 0:28. That allows anons to figure out that he is referring to the post from July 25, with a picture of McCain. So, Q seems to be telling us that the suicide he is alluding to is McCains.