Reading a black-and-white digest volume of classic Silver Age Justice League stories, and...wow, it's some seriously crazy shit, here. I mean, Grant Morrison on his craziest day could not come up with anything this batshit insane. The Weapons Master has traveled back in time ten thousand years to test his super-arsenal out on the JLA (see, he's surrounded by cops, and he knows that one of his super-weapons can stop the police, but he doesn't know which one, so he's traveled back in time ten thousand years to figure out which one is the best, so he can then travel back into the present and use it on the cops. Just typing that sentence destroyed brain cells.)
So as I say, the Weapons Master wants to test his weapons on the JLA. His plan--trap the JLA in a force-field (which he won't use on those pesky cops), and then as they escape one by one, drop a cryptic clue as to his future whereabouts so they'll chase him there and he can test his weapons. The first clue, given to the Flash, is "When the ghost walks at Hesperus on the second day of the moonless month, I am waiting to do battle!"The Flash knows that "when the ghost walks" is theatrical slang for payday, and finds out from an encyclopedia that "Hesperus" was Homer's name for Venus. So from that, he instantly deduces that the Weapons Master will be attacking a planned rocket launch to the planet Venus from Florida that takes place February 1st!
And he's actually right.
Super-heroes were insane in the Fifties.