Financial aid submission deadline means..?

<p>i'm applying for financial aid
and the requirements are FAFSA and CSS profile.
it says that the submission deadline is march 15
but what does it exactly mean by that?</p>

<p>i have filed them electronically (today, march 14)
and it said it will take a few days to process my application
(i don't know what they mean exactly by that)
so was i supposed to count those days as well?
or am i all set set since i'm done with actual filing process?</p>

<p>i'm a lil bit confused here.</p>