The philosopher Edward Feser has a lot to say on this subject. I suggest you read his article
How To Go To Hell, in which he addresses this exact topic.
It does not have so much to do with
time per se, as it has to do simply with angelic nature.
I’ll paraphrase from the article, although I highly advise reading it for yourself.
In essence, Angels, unlike humans, do not have a corporeal nature which allows them to experience multiple different habits or passions that can pull their wills in one direction or another. Instead, they have only one appetite, that of the Intellect and Will. This is because angels are creatures of pure intellect and will, and without any corporeal faculties. Because there is no competing appetite that can sway an angel in one direction or another, whichever direction it’s will chooses, it becomes immediately and irrevocably fixated in such direction.
Furthermore, humans learn and gain knowledge on sort of a curve. We uncover information as we progress, through trial and error and so forth. Whatever information an angel possesses, however, it possesses it
immediately at the moment it comes into being. This is because there is no temporal or cognitive process by which an angel discovers new information. Thus, as Edward Feser suggests, there is also no correction of a cognitive process that has gone wrong. An angel simply knows what it knows and all of the consequences at the beginning and chooses what it perceives as it’s ultimate good
all in one single act. An angel’s will is irrevocably set on what it chooses immediately upon its creation.
So, again, you really cannot look at this via a temporal lens, e.g. “God created the angels,
then they learned who God is,
then they got jealous,
then discussed among themselves the best options,
then elected Satan as their leader,
then they decided they could “beat” God, only to
find out later they were wrong.”
On the question of why an angel would choose such a thing? Well no one ever said an angel was incapable of being totally crazy. But alas, pride can infect us all. Once thy perceived something less than God as our ultimate end, nothing could change them.