Even if creationist come up with some mechanism for compressing 14 billion years into 6 "days", the other difficulty is that the order of events described in Genesis 1 (why ignore Genesis 2?) is contrary to the order of comparable events determined by conventional science. Do creationists propose a mechanism which differentially affects the radiometric dating of bird and land animal fossils so that birds which were created on "day 5" appear to be younger than land animals created on "day 6"?
And if you are not interested in a theological discussion, please explain where the "6 days" comes from. Why would you just happen to choose this as the desired period into which to squeeze the history of the universe? Have you derived the "6 day" from some independent source?