I've created the same profile and some files with date matching its rules. All i see is that rules work within 1 day. I.e. files for the first 3 rules are colored while others are not. You can see it if disable/enable rules one by one.
P.S. I've also tried rules like 1h < date < 6h, 6h < date < 1d. By the way, Mathias, how <= rule can bes set (less or equal, gretaer or equal)?