Different between Fall, spring, and summer deadlines?

<p>Hi,
Im really unfamiliar with how college admission in the US works as i have been here for less than a year.
Right now im a senior with 4.4 GPA and 21 Act score.
Is it to late to apply for Summer or May?
Is my chances of getting in higher if i apply in March?
And if im applying for UF does it mean that my last chance to submit my application is Nov 1 regardless of season im applying for?
Thanks, im really confused and im spending long hours trying to figure out how things work here</p>

<p>Freshmen Applicants ( ucf )</p>

<p>Fall: May 1st
Spring: November 1st
Summer: March 1st</p>