When do i apply for TAG if i want to transfer in fall 2021

I’m a cc student, i just started this spring, I’d be done with my igetc and aa by fall 2021, right now i want to get into UC davis but I’m still looking at other schools. I want to start in fall of 2021. So when do i turn in my tag application? Is it this September of 2020?

They have the timeline at https://www.ucdavis.edu/admissions/undergraduate/transfer-timeline/

Even though you started in the spring, consider yourself as in the first year on that page. So you’ll submit TAG this Sept and your UC application in November

Your CC has a transfer center, take a look to see what info sessions they offer as well as starting to meet with a counselor. For TAG you are going to be required to meet with a counselor when you submit it (see https://www.ucdavis.edu/admissions/undergraduate/transfer/transfer-admission-guarantee), might as well start now to make sure you haven’t overlooked anything