Does anybody know where Apple publish the rules by which the OS updates the creation and modified dates and the logic thereof? I have a downloaded file with a creation date 2 April time 19:13 and a modified date 2 April time 18:58. So, it was modified before it was created. Huh? Then if I copy the file I get the created and modified dates as 2 April time 18:58 despite the new copy being created 4 April. Logic?