Can you take the SAT in November if you’re a senior or will it be too late?
SAT deadline for the UC’s is December so you can take the November SAT. Make sure on the UC application you indicate you will be sitting for the November test. Also they will take scores up to the December test date.
You can read more about deadlines here: http://admission.universityofcalifornia.edu/freshman/requirements/examination-requirement/index.html